Yea, that’s the idea. I don’t care what opinion you have about the legitimacy of trans people in a sub meant for trans people to support each other. Not every sub is meant to be a place for “free debate”. In fact, there are some places where debate is not appropriate or welcome. Like you wouldn’t walk into an AA meeting and try to debate the health benefits of wine.

Especially places that are meant to be safe spaces for marginalized groups, this is really important.

It’s a common way of preventing a lot of harassment in some subs, and it’s done by a bot most of the time. For example back in the the day posting in T_D meant a ban in some of the trans subs I was in. The point was that if you’re posting in T_D, then the chances of you coming into a forum for trans folks to harass them was pretty high. It was easier and safer to just ban those folks outright before they began messing with people.