How so? They were insulted in a place that was supposed to be a safe space for trans people, so they went to another space that is supportive of trans people for support.

I'm cis, but it would probably suck to have a space online that is supposed to be for a vulnerable group and the admins and mods spend more time catering to and protecting those that want to harass and abuse that group than they do to the group itself. Someone who feels attacked or alone because of that behaviour shouldn't feel afraid to reach out in other places where they do feel safe to talk.