Two things: first, Asmongold is an arse and a clout chaser, FFXIV was "hot" during COVID, then he moved onto the next hot thing, LA.
Second, the community itself isn't overly hostile but it isn't the bastion of good vibes. We just have a lot of "UwU OmO" people in Cities using Yell, and also lots of LGBTQ+ presence, which gives the impression that it's a very tolerant place when in reality said groups are mostly concentrated in specific Worlds.

Try initiating a random conversation anywhere, odds are you'll be ignored, most conversations are either between FC cliques, or taking about/complaining about the game or current duty. Sure, your won't be told to KYS, and for some that's enough nowadays to consider this a friendly community.