(disclaimer: I'm not anti-ai nor do I think ai automatically makes something bad, _but_...)

To me, it's all fairly human-ai neutral except for this sentence which is oh-so AI cliche and casts doubt on the rest of it:

> This volume of The Art of 64-Bit Assembly closes the gap between a plausible explanation and genuine understanding.

"closes the gap" is a favored phrase by our artificial friends and the phrases "plausible explanation" and "genuine understanding" are just... so ... dramatic for the context.

The rest of it is pretty tame in comparison. In my armchair opinion, I'd guess it's mostly a composite of (professional) human-written/ai-revised and/or vice versa. Which is not necessarily a bad thing.