Personally, if someone introduced themselves to me using some online name like “Potato Robot” I would stop talking to them. But I don’t speak for others

Nah, I met a friend at a hacker space who used an alias, and didn’t find out his real name for years. At that point though everyone just kept calling him by the alias out of habit, so just bear in mind that if you introduce yourself under an alias you might be stuck with it for a while

I call my closest friends by their discord handles like half the time.

Nah I have a name I use online/for band stuff that a good number of people IRL only know me as