Women transition to escape the trauma men inflicted upon them. Men transition to escape responsibility for the trauma they inflicted upon women.
I know others have noticed this same general trend. It seems that most FtMs suffered some horrible abuse in their formative years. In contrast many of these disgusting Reddit MtF mods seem to have charnel houses' worth of skeletons in their closets. Everyone knows you're watching this site, Bardfinn. Maybe you should get a fucking job and pay off your child support obligations.
Another way of thinking about this: men transition in an attempt to leave the oppressor class; women transition in an attempt to join the oppressor class. Neither attempt works because no one seriously views the individual as part of the class s/he is seeking to join.
I think some men "transition" because they live in a delusional Pornhub/ Tumblr/ Reddit cyber bubble, believing that 1) Woman = nubile young human female ONLY (most other women...more mature, older women) are irrelevant, an annoyance, or an impediment to their fulilling their sexual fantasies; 2) women's lives are easier and that women are able to manipulate men into doing what they want; 3) Man = responsible, accountable, and downtrodden by the female sex, and they're sick of it; and 4) if they transition, they'll have more access to sex.
I think some women "transition" because they live in a delusional Pornhub/ Tumblr/ Reddit cyber bubble, believing that 1) Woman = object to be sexually objectified, humiliated, and assaulted by men...to be choked. spat upon, raped, etc; 2) women's lives are only about maintaining their sexual allure for men (even outside porn, ubiquitous, relentless advertising tells girls and women that their skin is too hairy, too wrinkly, too "crepy"; their bodies are too fat or too muscular; etc.); and, 3) Man = responsible, revered, the creator of civilization (despite men's depraved behavior these women encounter in porn).