Why not just create the structure you want to see for your own guild? If your problem is that people wouldn't participate the way you want, then your argument literally becomes that people aren't having fun right.
Also, the next time I have to explain to students what the "No true Scotsman" fallacy is, I'm just going to reference some of the parts that I quoted. You are being incredibly condescending.
1: You have no idea whether they're invested the way you describe.
2: "Representing should be reserved..." this is literally saying that it's the proper way to handle this, which implicitly says that other ways are either wrong or flawed.
3: You don't get to dictate what "true connection" is in games.
Claiming that people "should" be contributing a majority of their time and energy to one group is tantamount to claiming that people should be devoting a majority of their time and energy to one game. If I play other games or spend time with other people, it doesn't mean that I don't have the same depth of connection with my friends. If I had a friend that told me I had to spend more time with them and their friend group than others, we wouldn't be friends anymore. That is a toxic and controlling attitude.
I get that you want something specific from a guild, and more power to you. I mean that sincerely; I hope that you can create or join a guild that fulfills you the way you want. I'm truly sorry that you haven't found one like that already. However, it is arrogant in the extreme to say that it's the way everyone should be.