Is it allowed to publish playstation names or epic games names?

Hi, I'm totally pissed off from the Internet and therefore I want to publish his name (psn or Epic games name) on the Internet because he has insulted my family. Is it punishable?

It's not like these names are already public, but it's pretty reprehensible to denounce someone.

Refrain from insulting you.

In principle there's nothing against it, because it is an online game where theoretically everyone can read his name, but whether that solves your problem is the other thing.