For me it depends on the type and whether it suits the character. And yes, it HAS happened a few times already (to me.)

Have yet to have it happen I guess I'm not famous enough for the rules of the internet to apply yet lol.
(There's been a couple joke drawings amongst a couple friends in private is all.)

A couple times I had to politely ask the artist to either edit or remove the piece (felt bad because it was well drawn) because it depicted something I'm not into/the character absolutely would not do. The artist was very professional about it and took it down, but I told them they can still draw my characters, just in scenarios the fit them and are also not TOO extreme (this one instance involved intense detailed gore.)

Yeah intense gore may be a bit much.

Hah. I applied this rule for my characters by myself 🤣 two times. And after i create a character for lewd content, but make this really rare by mood and for me.

I've applied it to a few of my characters a number of times over the years, just never publicly shown them, only to a couple close friends.

Unironically, I'd be willing to be the first to draw that NSFW fan art for you if you'd like lolz (Only if that's something you'd be ok and comfortable with of course 👍)

Lol, main thing is to preferably "keep it in character/canon" if it was to happen

I can do that lolz I'm working on some other art rn currently so it'll take me a little bit to get around to it, I'll probs send ya a note or something once I'm ready asking ya for more details ヾ(•ω•`)o

I don't remember if I mentioned it on previous sketch dump, but I love seeing the process of creation (if we consider it an art procreation... watching art being drawn could be considered porn? xD)

About intrusive thoughts, I bet every artist (or owner of OCs) probably have them from time to time... I bet that If you leave a proper reference material (I mean SFW ones would work, but with some description what said character likes/dislikes) I bet it would increase odds (as not weird people would feel welcomed to draw... and it would reduce risk of weird stuff being drawn... I mean seing „recently uploaded” on FurAffanity I would try to avoid monkey paw effect xP).

Perhaps in a very loose term definition of 'p0rn', sometimes i hear it applied to seeing the inner mechanisms of machinery especially complex ones in movement.

Yeah probably crosses a lot of artist's minds, eventually i had to cave some time ago and make some myself sporadically over the years haha. Tho I've never released those, at times I've almost been tempted to create a "Secret Alt" account for such things but then it'd probably ironically get better known than my mains and I'd fall into the trap of drawing more stuff like that for the attention rather than focusing on regular art and story driven comics...