Yes, let's ignore non-native English speakers' mistakes. That way, they will never learn, and we can continue to subjugate them, along with those for whom English is a first language, but cannot speak it correctly, probably because they were never taught that "should have" is not spelt "should of" and that their "they're"s aren't quite there.

> those who try to shame people ... into silence on health-related forum threads

That's a bit overstated. But mechanical_fish is right that that my own choice of words could have been more tactful. That's why I changed "Syntax correction" to "Syntax tip" in the GP.