I was going to mention that but didn't wish to open the can of worms too much. Lol
I work in the behavioral health field, and while there is a lot of outdated terminology still used, the shift to MTF, FTM, transgender, and gender dysphoria has been very quick. Providers, in the US as that's where I'm located, have adopted that phrasing as the outdated terms have become appropriated by hate speech.
So yeah, I agree, what is or isn't "medical" is often times used as a talking point to justify who is or isn't "real" and target certain groups and people by othering them.