its because the LGB was never suppose to be part of the TQIA+ Its become a cult that reacts violently if they don't get their way and if you do not follow their ideology precisely.
I noticed this trend in the furry community years ago which is why I distanced myself from the fandom. People weaponized tolerance in the fandom to include everything from their extreme kinks to degenerate behavior and if you said anything about it its because you are a hateful, intolerant bigot who is every phobic they can think of. Probably racist too for good measure.
It's not a "trend," it's always been this way. Tolerance isn't "weaponized," it just feels that way to the intolerant. The fandom was always for the "degenerates," not the haters who whinge about them.
At this point I treat the fandom like a smut flea market. Get in early, get what you came for, and leave before the crowds and crazies show up....