I 100% agree with you. The GW2 gaming community is the BEST community of gamers from any games out there. They are welcoming, warm, willing to help and teach. It is very rare to have such a beautiful community in a video game that is free to access (core Tyria anyways). We need to cherish it.
The FORUM community however is a very small and very loud minority. These players are willing to take huge chunks of their free time to write extensive essays and reply to essays with other essays, all about some armor skin or a mount feature. I have played many games but haven't seen such polar opposites between the game community and forum community. To add, anyone stepping in will be chastised unless they are posting criticism.
I mean, have you seen the EoD feedback threads? The expack isnt out yet, all we have seen are previews from the devs that showcase a small portion of content. And yet threads after threads about expectations that were destroyted, player trust betrayed, lack of new features etc. The game isn't tested by players yet and the reviews are already in!
I don't post much at all, i usually browse. I took this time because I feel you, what you are feeling is why I don't bother outside of my own communities. It isn't you, its something about these boards that turns people into what GW2 community is not and has not been since the days of GW1 beta.