She might not be one yet, but her harpy friends are seeing to her becomming one. We warned you where this was headed. Pronoun guy is just the latest escalation. You need to put the foot down on this shit or start planning an exit strategy, unless you want this mind cancer infecting your kid too. Remember its a cult by any other name. You are basically doing the equivalent of being married to someone in Scientology or Moonie circle of friends. You need to act accordingly, for the sake of your kid and marriage. Chaos means well, but he is in willful denial about the seriousness of this stuff and always has been. This is a threat that needs to be dealt with early, especially because of the feels angle she is already leveraging. Bringing McCuck Muhpronouns is just her and her sewing circle testing the waters to see how much shit you will put up with.
Late to this particular conversation and all but here's my thoughts for what it's worth. My wife grew up in Eastern Europe. Certain aspects of life she has had a wildly different upbringing and culture on.
I've told her to her face that I think many of her beliefs are stupid and I have no respect for them or care. But she is free to do whatever. This didnt phase her. But she is mildly old fashioned and digs it when I put my foot down.