Oda is terrible at writing females uses them as marketing devices or plot devices. So yeah a grown man stanning a female One Piece character usually indicates something is wrong with them, usually being a gooner

The problem is when some take it to the extreme.
I'm a Ulti fan and I still believe she is stronger than certain characters, but at the same time, you don't see me calling her top tier or putting her above characters like Doffy or Who's Who.