How would that apply in a real life setting? You're assuming that busy people would take time out of their day to attend a social event in person to nitpick the demographic makeup of said event instead of making friendly banter. How often has that happened at social events you've attended?
Anecdotally, when I lived in Victoria BC (a very lefty city) this did actually happen at events I went to more than once. I didn't go to events much so unless I just was unlucky to witness this sort of thing more than once, it was frequent
For what it is worth, I didn't think the complainers went out of their way just to complain, they did have a genuine interest in the events. They just also liked to complain about the demographics and steer the groups towards things that would make us "more inclusive"
It always ended the same way: the group mostly dissolved