That about sums it up.
I could get into how his opinion doesn't change anything. I could get into how we saw books that have proper crediting do NOT distract from the text ("Babylon Mystery Religion" had end-notes that were legally and morally correct, and did NOT distract- in fact, it's easy to read the book and not notice they're there.) I could get into how vpw himself had a double-standard, where he helped himself to everyone else's books without proper legal and moral credit (in the majority of cases, he put a few in to cover his tracks), and then turned around and put copyright notices on all "his" books.
Ultimately, it's pointless. The sensible don't need me to point it out, and the other type would agree no matter how logical it is.