Sorry for the late reply!
I’ve seen a couple of blogs mention it, but I guess there is something called Body Integrity Identity Disorder.
In this disorder, otherwise sane and rational individuals express a strong and specific desire for the amputation of a healthy limb or limbs. Most date this desire to their childhood and not uncommonly the sufferer will attempt to obtain amputation of the specific limb. As few surgeons are willing to amputate healthy limbs, this often means that the patient themselves will attempt to irrevocably damage the limb in question, thus necessitating formal amputation. After amputation most report to being happy with their decision and often state, paradoxically, that they are ‘complete’ at last. (Source PDF)
WITH THAT SAID! I’m right there with you. I am willing to bet most if not ALL Tumbleronies that claim to be “transabled” don’t actually have this disorder. They aren’t desperately trying to find a way to have their leg amputated or whatever. I think it is similar to Dissociative Identity Disorder and “Multiples.” One is an actual medical condition and one is not. When it comes to “transabled” I can’t help but think that a lot of these people just have a crippling amount of shame or guilt that they don’t know how to deal with and end up choosing some outrageous outlet for it by saying they are “transabled.” A coping mechanism really.
So yeah. When I see it on Tumblr I think it is bullshit and similar to “transethnic” really.
They need therapy, but to deal with the underlying problem of it. Their shame and possibly depression.
That’s my opinion anyway.