For me, I see this as less of a black and white thing, and more of a gray area. It all depends on circumstance.
I don't want to come across as one of those "she can be fixed" types, but from what I've seen, a lot of pooners end up realizing that they are just confused tomboys once they get into a stable relationship with a dude who treats them well, and they quite quickly grow out of their retarded phase. If you meet a pooner, get along with her, and end up hooking up/getting a relationship out of it? Sure, whatever. That's fine, I guess.
The issue arises when you stop and look at the type of men who would intentionally go out of their way to do something like what is described in the OP. What kind of dude signs up for a gay dating application with the sole intention of preying upon vulnerable mentally ill young women who think they are homosexual men?