Yup, that is one large demographic of transitioners. Subgroups of transitioners that I feel like I see most often:

• people on the spectrum (ASD), with ADHD or OCD, are more likely to identify as transgender, according to studies; they get an obsessive fixation on transitioning, and are told that "becoming your true self through transitioning will fix all your problems!"

• people who have been through sexual violence; "mind-body disconnect" and alexithymia are relatively common reactions to sexual violence and "mind-body disconnect" is listed as one of the "signs" that you're transgender, so assault victims (who are often avoiding thinking about the traumatic event(s) they've been through) are like, "Oh, this symptom of mind-body disconnect must be because I am transgender"

• people with a paraphilia-- AGP or AAP-- or who otherwise fetishize same-sex men and women

• people who are LGB and have internalized or externalized pressure to "admit that you're a man in a woman's body" or "a woman in a man's body" (the old homophobic saying)

• girls/women hating being a woman, having a period, etc.

• people who are trying to jump on the trans hype train to cash in or obtain social status from trans identification (I honestly think this is the least common group)

edit: And to your point, I'm curious which of the groups is most likely to "get off being degraded, raped, beaten"-- just seems like having a past history of sexual violence before choosing to identify as transgender is such a common theme.