I think it could be AI. Aside from the general art-style being reminiscent of a lot of AI-content, theres a few more clues:
The belt on the old lady in the fourth image: starts on one side, doesn't continue on the other and blends into her clothes
The beds in the fifth image: on the left, the mattress blends into the frame
The expression in the eighth image: that expression is basically textbook ai-porn, see that all the time in ads
The bush in the 12th image: those flowers seem nonsensical
Now, I concede that this is conjecture. Its entirely possible I am wrong, that the artist's style has unfortunately become the template for AI. What I point out is often backgrounds, so it might just be a rougher approach to spend more time on the actual characters. Likely, its not all AI, but rather a blend, something liked edited AI. Especially since the characters look good and are, at least from the previews, free from typical imperfections caused by AI.