(The thread that I wanted to post this in was closed while writing, it's quite a wall of text to simply delete so I'll leave this here...)
K, time to write about elitism it seems...
1) In any game that uses numbers and calculations, there will be a "meta", a mathematically best way to achieve a goal given by the game. Now look at Raids: usually there's a timer and the boss has a given HP pool, this gives us the goal of doing X damage in Y amount of time as a group of 10 players. This goal can be achieved in many ways by many comps. You don't need a dedicated healer, you don't need the two chronos, you don't need to switch to the new hot max-dps build. But there will be a mathematically best way to overcome the challenge presented by the game. Dedicated players are usually pretty good at finding the optimal or best approach and since this is amobile game, information spreads fast. DPS meters, CMs, Raids themself have nothing to do with the existence of a meta in GW2. Before all that, even before Fractals there was Dungeon speedrunning, with everything we see today with Raids: the meta, the elitism, the number crunching, the skipping of mobs and mechanics. The DPS meters brought nothing to the community, that hasn't been there all along, there will always be a meta.
2) In GW2 the meta matters only in certain distinct portions of the game. By matter I mean that not playing some sort of optimized build will get you and everyone involved killed. Let's look at the challenges we find in GW2: Open World Solo play, World Bosses and Map-Metas, Personal Story, even Dungeons and non-CM Fractals can be done in almost every kind of setup. The challenges here still involve HP pools but either no timers(Dungeons, Story, OW soloplay) or the timer is almost impossible to fail(World Bosses and Map Metas might use some organizing or finding the right map but the amount of players usually makes the timer irrelevant). A meta exists in these aspects too, you will kill that Veteran Boar faster if you have dps gear and press a dps rotaion in full ascended, it just doesn't matter. As long as it doesn't kill you, you can play whatever you feel like. Raids and cm-Fractals are different, here your group needs to do a required amount of damage in a given amount of time. You just can't do them if your group doesn't match the requirements.
3) Most of the arguing goes on among two trains of thougt. One that says players should accomodate to the challenges of the game and one that says that the games challenges should accomodate to their players. The elitist thinks that everyone in his/her group should be at least his level and that everyone should know mechanics by now. The casual thinks that raids should be easier and more accesable. You can word these in many different ways. And as it is with many things the vast majority of players will have an opinion somewhere in between the extremes. Mostly it's a failure of comunication. We have the lfg tool, there's site dedicated to builds, we have a golem to test things, there's a community to talk to about things and ask questions. When you see a lfg and they ask for a given class that you don't know how to play, don't join them. On the other hand, if it's really important to your group that you're going for a fast and smooth kill, don't go for "all welcome" in your lfg.
4) I've seen and experienced toxicity from both ends of the spectrum between "git gud nab, l2p" and "Raids should be soloable content yet rewards should stay the same". Elitists think that they know everything and that their way is the only way to enjoy the game. Usually they look down an anyone who doesn't brag about benchmarks they broke or records they did. Casuals think that in the game everything should be possible for everyone, no challenge required to feel good or relax, they usually look down on the elitists as mindless rotabots, uncreative and uninspired hammering on the keyboard, tryharding to squeeze every second possible out of any given content. In my guild unfortunately, the casuals were by far more toxic than the ones who raided. Raiders offered advice in a polite manner, casuals replied with "don't teach me how to play, what, do think you're something better now?!". We tried to organize raids for a short while in the beginning but ppl were outright offended and angry as we asked the necros to run epidemic on a boss, "I don't like that skill, I'll use well of power instead or I leave".
5) I don't dig 'em both. I don't understand how elitist come to value a player only by its dps numbers or boon uptime, I'm far too social for that. But I don't get the entitlement of some of the more vocal extreme casuals either, hence my sig. I don't know how it is today if a player wants to start raiding. I kinda stumbled into a group where I taged along. I had given up on the armor at that point, but then I got involved, learned how to use a Druid and a Berserker for Raid purposes and went for it. There are ppl wiling to teach, they give their free time to do so. Find someone like this or a guild like this if you want to get into it, don't expect ppl to teach you in a random lfg, as long as they're not flaging their run as training there is no obligation to teach you anything and if you get kicked it's you fault for joining the wrong group.
6) Where elitism bothers me, but that might just be me, is t4+rec fractals. As stated above, sure, there is a meta for fractals and doing things faster means more loot per time. But t4+recs never required a Druid+Chrono+BS+2pDPS comp to do it in a reasonable amount of time. When I was active going for the optimal comp was almoste never a thing for me, sure I was happy when it happened but I never forced it. Nowadays the t4 lfg is full of optimal comp groups with one maybe none group open for "all welcome" or "know your kitten and all is well". Fractals t4 is much more about knowing the mechanics than it is about dps. Damage only comes into consideration when players want to skip mechanics or when it comes to concentration, the faster a fight is over the less time the boss has to kill you, I get that. But even if you skip mechanics and have a high dps output as a group, I always felt that what you won in terms of time, you lost in terms of enjoyment...while not gaining that much time imho.
If you want X, and Y is needed to get get X, you also have to want Y if you really want X. If you don't want Y, you don't want X. It's easy.
Pro: Build Templates, Dungeon Rework, UW content
Contra: New Races, New Classes, New Weapons, Capes