I agree. I used to think "her penis" was a nonsensical phrase insulting to women. But using female pronouns makes so much difference. Male pronouns would lead people to think, "Yeah, man commits sexual offence, as per usual, wonder why he's wearing a wig." The female pronouns make people think, "Man commits sexual offence while claiming to actually be a woman, WTF? Does he believe that? Is he deranged as well as perverted? And the bad wig is fooling no-one." The pronouns are an example of "Let them speak."
Not to mention the fact that it makes it very easy to do a google search for similar stories, of which there are an extraordinary number... I just tried it on google and got nearly 1.5million results - not all crimes. One of the first results was a Reddit thread entitled "Five-year-old telling friends about her penis". I won't bother linking, I'm sure you can guess what craziness ensues.