I don't challenge the author's use of the word "abstraction", I challenge the validity of the very word "abstraction" in the context of computer science. What we're dealing here is not abstraction, it is something else. But thinking of is as of abstraction brings us to the state of affairs the author criticises.

If you remember that there is very specific very concrete automation behind every abstraction, you don't stack them up until the pile becomes impossible to either control or understand.