It doesn't bother me at all to be honest. I don't reply to comments or argue on a regular basis anymore because I feel like i've hit a point in my life where I don't really get offended by anything.
If they're really angry and cursing at me, then that's their problem. Or maybe they just want their criticism to be expressed in the most clear, transparent way possible. I'll listen to comments like that, even if they're like that. Some people will just yell so that others can't talk (Real life only). Some other people scream and curse on the internet to either offend you, or desperately want to be listened and obeyed. I would just tell them that no means no if they just want something. If they want me to do something, I might listen to them.
This is a big topic imo. Multiple answers in multiple scenarios. It just depends for me. But like I said, it generally/usually doesn't affect me.