Voxel size of 1.0^3 mm^3 is not nearly close enough to claim "nearly identical"
It's really not. The whole diagnosis was concocted when trannies took over the DSM subcommittee and got Zucker, the original guy who came up with the concept, fired.
The reality is, it's about two groups of people.
First, effeminate gay men and unhappy lesbians. They become "straight" trannies.
Second, and this is most trannies, straight men with fetishes. Basically cross dressers who went too far. The Bruce Jenner types.
The second type are the ones causing all the trouble.
"Dysmorphia", unhappiness with the body, happens to a lot of people, but it only turns into> Welp, better cut my dick off
if stereotypes are in play.