Earlier quoted context omitted.
Do you really think the best way to react to a perfectly civil comment attempting to tell you that you're saying something wrong is to get defensive and pejorative?
Yes. Your comment adds nothing to the conversation. It's like posting on the incorrect use of your/you're there/their/they're. Mistakes in grammar happen all the time. When they happen, it is easy for the reader to see the mistake and move on. Corrective comments mean nothing in the end
So it is to everyone's benefit to correct spelling and grammar errors. People learning English, kids, whoever... they all benefit from seeing correct language. Lashing out against it is infantile and counterproductive.