Look up deadly prey gallery, the website hosting the picture. They commission some OG artists & some new artists to make new posters specifically in this style. It's legit. This one is signed by Nana Agyq.
Definitely not AI, but if these are new commissions it's not unreasonable to suspect an element of self-parody, playing up the aspects of the originals that amuse people.
You don't have to take my word for it. Instead of suspecting, please read up on deadly prey gallery, as I had suggested.
They go on tour with the posters and some movies. To hear them talk about it and reading through their book, it's obvious that they treat this seriously.
