I wonder what's going to happen when the cis women realize that banning trans people from their spaces didn't actually fix anything and their husbands, boyfriends, and colleagues are still groping, beating, and forcing themselves on them.
That's ridiculous. Why would you think that the TERFs believed that banning trans people would stop all groping, beatings or rape? They're defending their safe spaces. They want the safe spaces for a reason.
It seems like you're talking about something different. Originally, you were talking about cis people who thought banning trans people would stop their husbands, etc., being abusive. In other words, that banning trans people would stop all abuse. It seems like what you're talking about here is something different: not all abuse but only some abuse.
Why do you think there are people who believe that banning trans people will stop all abuse?