I think the idea of relaxation seems to even be pretty optimized. Meditation is objectively the act of doing nothing. And yet to me it's the ultimate optimized relaxation. "Do it every single day for twenty minutes and you'll feel amazing!"

Maybe humans are getting better at treating what used to feel tough as relaxing. And if not, then society has to figure out how to deal with people that need to spend 95% of their day fishing or staring at a wall to function and be happy.