Well, aside from my daughter's friends and their short lived "xe" phase, none of this impacts most of us a bunch IRL, I'd venture but the OP article is giving guidelines that kind of assume it. As a discussion point, I think it's fair to assume we will actually run across this stuff and at least our hypothetical positions regarding them.
Sex is binary, though. It doesn't really have subgenres that are significant enough to warrant new or inapplicable pronouns or terminology. I guess the irksome point for me is that it bothers me when people's imaginations are pushed on others and demanded to be treated as reality. It's like talking to a Trump supporter and they demand that J6 be taken as a peaceful protest.