See, that's the vibe I get from the term. People want to sound like they're somehow ABOVE the console-centric shooters and turn their noses up at them, despite the fact that when you consider what most of those folks talk up, it's stuff like Mario platformers, where the difficulty is solely about timing, and nothing about real strategy. I like the Mario platformers for that timing-based difficulty, but call Call of Duty or Halo "dumbed down" because of regenerative health is just stupid, IMO. I can accept (and agree with) hatred for the Target Assist in it, because that mechanic is illogical (it's like it's there to help those player keep up with their PC counterparts, but they don't play cross-platform, so it's pointless).
I have played plenty of CoD and Halo, both with friends/family (none of us would qualify as whatever the heck a "dudebro" is), and by myself (the more-common aspect). What's funny about that "play with your dudebros" thing is that if you actually play these games online, you'll see that the VAST majority of people are playing without mics (my biggest gripe about playing an FPS online).
At the same time, I grew up watching my dad on Unreal and Quake, and the first shooters I played online were Quake III Team Arena's Urban Terror mod and Unreal Championship on Xbox LIVE. I wouldn't at-all say that one type of shooter is a more-valid option than the other, but I WILL say that playing Counter-Strike (which is OK) is one of the most-infuriating experiences I've had in an FPS, because of how overly-inaccurate they make the guns.
Ramblings aside, my point is that this whole "dudebro" ideal seems childish.