Honestly? No, I don’t see that. I’ve read over 300 books over the last few years, quite a few were even romance novels, but I don’t see what you are referring to. Authors often use trauma as a plot device for character growth and story development, sometimes it gets a bit tropey, which is probably what you are referring to as a “fetish”.
Now if you want more fetish books, you’ll want to get into the BDSM/dark romance books. Those have lots of delicious fetishes in them.