The path of least resistance requires less work? I don't disagree with your view on this but it seems like the incentives simply aren't aligned to learn how to dodge an ever evolving anti-sexist culture that is interpreted as having different communication rules by different people. If it was as easy as like "don't misgender people" or something sure, fine everyone can learn the rules of the protocol in under 15 minutes. There is no reason why anyone can't do that. The rules for interacting aren't this simple though, and they are often differently interpreted by different people. Learning how to communicate in a way that makes every person feel comfortable often just isn't worth the time investment. If we want people to take this other option it has to have significant and demonstrable positive incentives that make people want to invest the time.