Maybe it's because I have more of a management background, so I'd have access to relevant metrics, it doesn't downplay the fact that if you have any hard data on your resume(protip, like you said, it's hard to have the numbers or prove them.) The HR person isn't an idiot and understands other parts of the business contributed. That doesn't make seeing it underneath the header for what someone did at a job less good. They'd rather see that than the normal copy and pasted by recorded job description. Other metrics used in IT would be number of users you've serviced, average clients seen a day, tickets answered a day. You can't just say no one knows how impactful they are on a business, I'm saying to quantify and have THAT on your resume than regurgitating HR reqs. This is about standing out to get to the interview.

They are fluff.. this is for the hr person, no? Are you trolling or sending your resumes straight to the lead tech lmfao? You can be the best coder in the world if you're a fucking ape, and can't write a resume, you'll be told to get fucked. This is the real world, with rules. If you don't have connections, and are cold applying, you have to sell yourself. Believe it or not it's completely possible to have a good education, know your shit, but just NOT understand that what you learned in school vs when that's actually applicable is. Of course this is all interviewer and job dependent, but this applies for MOST jobs. Especially for people that have conducted more than a handful of interviews in their life.