Yes, but actually when I first started this little research project into WWE fandom I found that a lot of the recent fanfiction is omegaverse where Kevin Owens is mpreg. Seth Rollins as well but mostly Kevin Owens.
I'm really interested in what people think of WWE fan fiction because it's become really taboo to do RPF and technically that's all that WWE fanfiction is. It's sort of a gray area, though, because the people really overlap with their character so much.
I'm not sure what the meaning behind it is, but you can find both males and females in fan fiction that are pregnant, it being more common among bigger characters. Owens appearing pregnant is not shocking. I don't really have an opinion on it other than my issue with children seeing the more pornographic aspect of these pictures by mistake. Like I said, it isn't something I actually go looking for lol
The role-playing aspect of it, like e-feds and be the booker, those areas can go either way. It depends on who runs them and who joins them. E-feds involve made up/self made characters where as most btb involve real wrestling characters. Again, no issue with people doing these things but when kids see the more graphic stories, it is not a good thing.
I guess it is an area of "art" that can't really be rated so it is up to the parents to make sure kids aren't reading or viewing the more graphic stuff. I avoid it out of preference, it is not my cup of tea.
I think it is considered legal if you are a public figure or character to be portrayed as/in art anyways. Prime examples of this can be seen with political figures.