Anime avatars are often a coin toss between (potential) comrade and chud, so it may be fun and maybe helpful to think about and share those in the place of that old 
bellwether for chuddery.
Mine is anyone with ".eth" as a suffix in their online name. I have yet to see a single person that does that that isn't a chud. 
It may even be cheating, but seeing an actual cryptofascist cartoon "original NFT do not steal" is a pretty reliable red flag too. 
EDIT: Oh yeah, I almost forgot. 
This is very nerdy, but anyone who knows and understands the GPL and AGPL licenses, but denigrates them and defends the MIT and BSD licenses instead.
The former are based. The latter are the software industy's loving gift to Wall Street.
why does nobody do copyleft