Yes, I find everything you’re saying very unfortunate. Some players feel that if we implemented something (like undo requests), their opponents need to let them use it. But that’s just not true. Our documentation makes clear that:
The easiest way to handle this situation is to ignore these players, but that probably won’t satisfy you or them. If you feel up to it, you can share a link to our documentation and let us be the bad guy rather than you. Or you can take a radically different approach and block the players using your moderation controls. The choice is yours. But in any case, we hope that you’ll treat your opponents respectfully and be a positive presence here.