There are certainly some pockets of academic circles that only try to appear to be working hard 12h every single day and only care for having you rub my back I'

There are certainly some pockets of academic circles that only try to appear to be working hard 12h every single day and only care for having you rub my back I'll rub yours kinda deals. But many of Ph.D students that are monkeying around in STEM doing seemingly useless stuff actually expand their areas of expertise and encourage each other, gain curiosity, become creative and it helps them to make progress. You have to look for certain clues, they can't be having too much fun -then they are not doing any good work, if they appear too bogged down -they don't know what they are doing and shouldn't be there in the first place.