going to HR over this seems ridiculous...
do this anyways.
they're creating drama for themselves and it will suck in more people if they don't get the validation they're seeking. either figure out how to give them what they want in a way that works for you (this usually doesn't work) or do everything in your power to protect yourself.
warning: if management sees them as more valuable than you are; you can expect going to hr to backfire.