Their basic point is very valid, and the term "AI" is now so overused that it's become essentially meaningless.

Recently I've heard "AI" used to mean:

* using large language models for code/text/image generation

* goal-driven search of a problem space

* pattern extraction from images

* algorithmic decision making

* audio pattern recognition

* something (unspecified) using lots of computers

* and more trivially, "doing it on a computer"!