To quote Pinsplash, fittingly a Half-Life/Source engine modder:

Some have said I should avoid saying AI to avoid confusion with machine learning.

No. NPC AI may not actually be artificial intelligence but nothing in machine learning is true artificial intelligence either and it was our word first. “Our” being gamers. I will not concede any bit of language to dumb-ass tech bros.

https://www.youtube.com/watch?v=V66qAlF_BvE&t=162s