Not fully sure what you're referring to with "AI explosion" but.. to be honest I'm not really feeling any magic here. What I am seeing though is a sales model being worked on and hyped up.
Most of the time when people talk about AI they in fact are referring to a database which simply uses a specific algorithm to find and present the results. Yet because of that the outcome is more than often both predictable and very limited on its own.
For example... "Girl tied to wooden table, ready for spanking" => woosh! your result.
(edit): links to external websites are frowned upon here, best stick to Renderotica only.
Wait... that wasn't what I meant. Ah: "Girl tied to wooden chair, ready for spanking!", and lo and behold: the engine now resized the same prop to make it look more like a chair. Easy!
Now, I'm obviously exaggerating a little bit here, but generally speaking this is how many of those engines work: they only provide a limited amount of assets and customizations, where the emphasis is on "easy" such as applying different colors and such. Ease of use is the main force behind AI it seems, and that's very relative to context.
But the moment you want something more specific then most of these fall apart. If not right away then most definitely over time when you will eventually notice the limitations. Of course that usually happens after you paid for some kind of subscription so... in the end you're left with pretty much nothing and get to start all over again ;)
Let's not forget that AI is still set up by humans ;)
Human imagination, especially of the dirty mind, almost has no limits.
I mean, with all due respect but even Skyrim players who got a bit fed up with the often erotics showing up still had to admit that several character skin texturing was completely insane with regards to the attention for detail.
Several still grabbed characters from "naughty places", not necessarily to get access to nude figures, but more so because the quality was that good.
I don't see AI reaching those heights any time soon the be honest.