Bros were supposed to be masculine tech people that weren’t fat pimply nerds. https://en.m.wikipedia.org/wiki/Brogrammer
Jocks are masculine men that only care for sports.
Jocks are masculine men that only care for sports.
When people talk about crypto bros and tech bros that's the whole shtick, they are saying their targets are not defined by technical ability (which is stereotypically attributable to geeks). So pointing out he wasn't really masculine is failing to see the metaphor behind "crypto bro" used as an insult.