I am bothered about what it is about some men which results in paraphilias. Its obviously not all men, but it's enough that they can control the others in society. The normal men don't seem able to say "shut the F up about women's knickers, watching girls at the beach, filming up skirts (no, they've stopped that one), dressing in your mum's, sister's clothes." "Your not b*y stunning and brave, you're nuts, and you know you are."
For one thing, the fetishists are queering normal men's pitch by making women more scared of all men.
Paraphilias do not aid evolution, increasing the likelihood of passing on their DNA, surely. Though keeping quiet about them until mid-life does. Their children must dread what they are going to pass on.
In the case of gays, you can argue that the inheritance of the primitive group was aided, as in wolves and meercats, by having adults not involved in reproduction, but supporting the family's survival. I'm blowed of I can see a way this bunch of males can benefit any society.
Can you imagine a bunch of early humans putting up with "I'm a girl, but I'm not coming digging roots as it will break my nails, I'm not going to process skins, it will damage my teeth,"? "I'm going to lol about waiting for the invention of lippy, swirly skirts and stilettos." Doesn't work. Living as a woman was hard work up till the last century. What were these men doing then? (Molly houses, I know, but that's not many of them.)
If it's to do with getting sexual feelings without responding to real opposites, the place to look for the absent cohort of middle aged women transing would be among the women left single in the UK by WWI. There were a lot, and judging by teachers of that generation, maybe a number found their inner lesbian. But were there a lot who actually wanted to be men?
What is it about men? It seems to be something very, very wrong in the development of such men. None of those I know have such characters.
*The builders who worked with Fred West weren't able to call him out on his excessive use of excessive porn, and the contractor wasn't able to say he wasn't suitable to work alone in my sister's house when her husband was away. He apologised afterwards when it all came out. Not a paraphilia, but a case of men not controlling someone who should have been controlled.