This article nicely represents the narccisistic hubris of the ivory tower leftist viewpoint, and in-group social behavior at large. Tech Bros are the nerds that were (and still are, despite shallow appropriations of nerd culture in the mainstream) cast off from "normal" society. This has been the norm in the U.S. for decades. It's not cool to be smart and have geeky interests.
Now tech is hot and the in-group is having trouble competing with people for whom this wasn't just a job or a class, or even a hobby, it was an escape. So they go after their characters to justify quotas and the now deliberate social stigma they were previously oblivious to enforcing. Tech Bros is a dirty class stereotype which totally ignores the passion and skill of the people who are revolutionizing society, for better or worse. And at the end of the day it's just the weird nerd kids being bullied as always.
There's an obscure blog by a guy who talks about the three or so stages of popular subcultures, and how one of the three groups eventualy ruin everything, linked in the comments below which is related.