Speaking of fallacies, dismissing an argument because you found a single fallacy within it without addressing the main substance of the argument is known as the fallacy fallacy.
There is a lot chew on in that comment and that article beyond "a bit of a quack"
The fallacy fallacy is when you dismiss a conclusion based on a faulty argument. Him not addressing the argument isn't that. Him dismissing the conclusion of the argument is that.
Speaking of the fallacy fallacy, calling out someone for calling out someone for a fallacy using the fallacy fallacy is the fallacy fallacy fallacy — as an initial fallacious fumble may indeed foretell further fallacious findings in a given figure.
Oh nice to learn that. I knew a less formal version in my country which we call "the fat virgin fallacy" which is when you denounce a fallacy in a somewhat informal less strict conversation. Made popular because libertarian argie president liked to tweet and denounce fallacies like so.
There is a lot chew on in that comment and that article beyond "a bit of a quack"