As much as I’m not terribly fond of the guy, IIRC he’s 36, which makes ‘88’ likely short for 1988, the year he was born.
Oh OK, that makes sense. Still, an unfortunate choice of username that could add to the confusion.
8 is also a lucky number in Chinese culture. I’ve seen a lot of "88"s in Chinese social media just because of that.
It always sucks when shitbags co-opt innocent symbols and language.
This was my first thought, as it’s a very common username addon. I was unaware of all the other stuff.
While yes adding your birth year to your username is common (but terrible OpSec), adding 88 or HH or other Nazi symbolism is also common among their community. Especially in an open setting.
It serves as a shibboleth for the alt-right that you are one of them.