I would say split but only some kinks like scat and ws since that's like different than those other kinks🤔
But its my opinion :)

I'd recommend splitting just the extreme stuff like scat if you want to split

You could always just add the more adult or extreme kinks to the start of the title for each submission. Tags like [ws], [scat], [gore], [vore], [vomit], [rape], [bdsm], [necro], [wam], etc, come to mind. Two of those are ones I search for a lot.

Any kinks should already be in the normal keyword tags for every submission, but the more explicit ones should also be prefixed to the title. The reason is that titles are visible before clicking on a thumbnail, while keywords are not visible until after someone has clicked to see the full image.

Title tagging is a lot less work than making separate folders for many topics. It's also less risky than making multiple accounts. I can't count the number of times I've seen people complain because they accidentally posted to their wrong account. Juggling passwords for multiple accounts wouldn't be fun either.

I'm perfectly happy with all of your art in one place. If I see something that I'm not into, I simply move to the next image without even thinking about it.