Because (if I'm remembering the article correctly, am working from volatile memory and not gone back over it, so apologies if I've overcooked this) it's not phrased as particularly constructive criticism, it basically just hilights general pain points in a slightly snarky way.
Learning to take criticism well is HARD, I'm still relatively shit at it despite my best efforts, but learning to give criticism well is even harder.
As a community, we lack some degree of common community spirit, to coin a particularly trite phrase.