I think it's too reductive to say "if a workplace is unreasonable", as if it's a binary condition. At any workplace, there are going to be all sorts of people, with all sorts of opinions, many of which may not become apparent until the issue is forced. Some of those people will be in charge of others. So it's entirely plausible to have an office full of mostly-reasonable people and still find a manager who asks their report to relax about being misgendered.

The retrograde sexist thing sounds obvious because public opinion there is so one-sided. But that's not true for all issues. It was legal to fire employees simply for being gay or trans less than a year ago.

I think we're mostly on the same page here. I agree that ultimately, assholes will find a way to be assholes regardless of the policies in place. But we should still be wary of policies that give them cover to do so.