I believe this to be a message to the greater community. I think most of it is probably external to the game (forums and message boards), I wish the moderators would step up, or larian would step into the role, in some of the more active message boards (steam forums, Reddit), or denounce the boards and their hosts and start their own.
I’m out of the loop, but I imagine all toxicity about official mod support is people who are also angry at the BG3 mod community for acting out its anti-bigotry.
Toxicity is the defining characteristic of online gaming communities for ~25 years now. If you decide to work in that industry you shouldn’t be surprised by it.
Not a reason to not wish for a different environment around gaming communities. Just sitting around thinking „always has been that way“ is not the way to change anything about the situation at all.
They’re almost certainly not surprised by it, they’re just fed up with it, and are telling this fact to gamer assholes.