[thisGuysAccount]

I agree with you that 'brogrammer' is saying something with the connotation that the brogrammer is less mature, less intelligent, less competent maybe.

Bro-science, though, is something else. It's the kind of thing that's based on anecdotes and passed off as science. It's sciencey. Things like "Bro, if you eat ground deer antler before you work out, you get huge gains! The guys at the bodybuilding show did it."

It's more obvious in sports, but I've seen it in CS and business as well. There, it's in terms of "we did X, X worked, X is the best way to do it." without comparing X to other methods of implementation. There are bonus bro-science points if other methods are scorned without consideration.