TBH it's important to clarify that he is not actually trans to point out that he is using it as a loophole to gain access to women's spaces in order to predate on girls. Gatekeeping is an integral part of giving a *male woman* access to female spaces. Gaining access to the private spaces of the opposite sex should be much harder than simply self-identifying as a woman.Why do they have to say that he's not transgender? Assholes exist in every community, and by saying that someone isn't trans because of their behavior, there will be a lot of unanswerable questions about gatekeeping. In other words, wouldn't it be easier to just acknowledge the fact that he is a terrible person no matter what he is?
* I use male/female to describe genetic sex, man/woman to describe gender role presented/lived, and masculine/feminine to describe characteristics and personality, because a male cannot become female, but can be a woman after a legitimate transition wherein the male lives as and presents as a woman, even if some personality is still masculine (just as females sometimes have masculine traits). I wish it were this easy irl, but they just won't allow it to be.