IDK why this is burning a hole in my brain right now but I gotta get it out...

Unisex bathrooms do NOT exist so that trans and non-binary people have a place to pee. They exist so that people with public bathroom anxiety have a place to pee. This is important for two reasons:

They're not just for trans people. They're also for people with social anxiety, parents with small children of the opposite gender, and basically anyone else who wants a bit of extra privacy. Having them available is good for EVERYBODY.
Trans people can pee wherever the fuck they want. If they're still early and not out and want to use the AGAB bathroom to avoid suspicion, that's fine. If they want to use the bathroom that matches their gender identity, that's fine. If you're so scared of a peeing trans person that you don't want to be in the same room with them, then YOU can use the unisex restroom.