They're not very toxic, but my experience is that it's a small, elite community and they're very good at the game.

You're going to have to go all in on learning the game, putting in massive effort into every game just to keep up, and will still probably lose most games. I just don't have it in me to play that kind of competitive RTS game like you're trying to climb the SC2 ladder to the top during peak Heart of the Swarm playercounts or whatever, so FAF multiplayer was a no-go.