I guess any oppression makes its way into ppls fetishes and kinks and taboo explorations so I wouldn't be surprised at all the world is full of degrading forces, and those forces make their way into stylistic fantasies...usually with yaoiz I think about more the terror and appeal in stories that come from the structures of homophobia/misogyny that usually are the source of the "restrictions" that bind and cause erotic repressions and struggles (and release) in characters. (Hence "in order to feel the pleasure of release you must first be Tied Up" sentiment) I guess it's not a stretch and makes sense to me that an eroticizing and exploration of transmisogyny, since it IS part of misogyny, would play a role, since well, it is prevalent in mainstream society. Idk I'm not an expert on this, I'm just spitballing here.

Like I said In the earlier ask my view of yaoi appeal is that it has to involve a dipolar dynamic between two points, and not just a singular intriguing or attractive person or character to fixate and commit things upon, but that's just me (in looking at that fujo chart of the animal-type fujos, there's a whole section for ppl fixated on a single character who dont care as much about other pairings as long as their guy gets fucked, but I would argue a "mob" is a character in its own right)