>cis woman porn is the default
>pre-/non-op porn is a significant niche genre
>srsoid porn is virtually non-existent

>>40083482 (OP)
the only people who look up srsoid porn are trannies who want to self insert and see how results are and a small subset of chasers

>>40083482 (OP)
There isn't much point to it unless you're into castration and find it hot that people who look like men were altered to look more like women.
If you're just into people who look like women then regular porn would suffice for that.
And most people who are into people who have more masculine type bone structures also want to see dicks.