The art reminds me of comics from the 70s/80s.
If I'm not mistaken, the artist is French. He must have been influenced by "Moebius". I recommend reading "Is Man Good?", it has nothing to do with Yaoi, but it captures the essence of this artist (science fiction, humor...).
And if you read the comic Conan the Barbarian you'll also see a more "raw" art.
Regarding the mistakes, in several comics drawn without AI, there are mistakes with fingers and anatomy.
I'll never forget a mistake in a DC comic from the 90s by Mike Deodato, where in Thor's hand holding the hammer he put his thumb after his pinky! LOL
To err is human.
But nowadays, saying that there is no AI, is hard.
How is it AI? I don't think it's nice to insult actual artists like this.. it's not even constructive criticism. An actual artist could never be like AI, cause it's the other way around
sure the art is nice but at some point it does look like the panels were drawn by ai... just my personal opinion tho