Earlier quoted context omitted.
As on Fox News, for every opinion one can find a counterpoint. This particular counterpoint does more damage than good in the age of TL;DR. I'd rather read the writings of 'an educated person who knows they feel vaguely anxious and insecure whenever they write "however" or "than me" or "was" or "which,"' than the incoherence of someone who thinks grammar is pointless. I often see this counterpoint cited, but never it…
You've completely avoided reading Pullum's article, it seems. No one said grammar is pointless. No one said novices shouldn't learn grammar basics. Only that they shouldn't be taught falsehoods.
But if he's got a better recommendation, or wants to write his own book, then I'm all for it.