Good article -yes, I read it all, but I speed read.
I do wince when I see poor spelling or grammar, but I would not dream of correcting what anyone wrote on a forum. I was fortunate to attend school in the days when we had lessons on grammar and I have a natural 'eye' for spelling (if you see a wrong spelling in my posts, it is probably a typo) but many contestants on the quizzes I watch appear to be unclear about the difference between nouns, verbs and the other parts of speech. Some of them are teachers, so it is hardly surprising that their pupils have problems.