>It is an utter and simple fact that due to tech being an everchanging landscape, any book more than a few years old is going to teach bad habits or explain concepts incorrectly.

Concepts change meaning and good habits turn bad every few years?

Shitty books are shitty, OKish books will be probably be fine for a language intro, even if they are old.

That's why I like old books at libraries. They were from a time where the research / book ratio was better. People in research centers didn't write about trivial stuff. That's why math is so nice (when you can parse it), very general and aiming at timeless.