This used to be called "buzzword bingo" and was pretty much required. It was how you got past the initial automated filtering step before a human even saw your resume.
Most applicants have no idea about your internal HR procedures and what's the pipeline before the resume even gets from you so they might as well optimize for what generally seems the most "successful" approach. Maybe they actually think writing metrics and keywords is a good idea, maybe they think its stupid and resent it but can't get any interviews without it, its really impossible to tell without other variables..
For my own resumé, I include the stack used at each job which I feel strikes a fair balance.
