I don't see many of them anymore

I agree and think it’s the ‘and they realize it makes them look like assholes’ part that explains it. By the way, your first ‘realized’ is spelled wrong.

well, most times i saw grammarnazis online they got really smashed by other users for being so rude. and nowadays where most people use Touchscreens to write.. there are more errors that can happen just by accident. so it would be rude to mess with someone for making a spellingerror (constructive critic is good, but not flamewars like in the old days :D)