Undetectable CGI in games ... right. I don't think you are a gamer.
In movies it can be done with enough of manual tweaking by artists and a lot of photographic content around to borrow sense of reality from it.
"Potato" devices by which I assume you mean average phones, currently have better resolutions than PCs had very recently and a lot still do (1080p).
And a photo on 480p still looks more real than anything CGI (not AI).
Your signature is hilarious. I won't comment about the reasons because I don't want this whole thread to get flagged.
I think most "AI" slop content falls under this phenomena:
https://www.youtube.com/watch?v=vJG698U2Mvo
Several 8bit games had their own aesthetic charm, but were at least fun...
Cheers, =3