I think some people, even in younger generations, don't know what 'chill' really means. They see it as laziness, because the idea of not 'producing value' every waking moment actually scares them. That fear is the driving force of their lives. They don't have the imagination/empathy/experience to see past it; and judge people (including themselves!) through that lens.
It's deeply unfulfilling, I'm sure, and not just for boomers.
But there's also other kinds of value, ever had something sentimental that you couldn't pay someone to take? Things like family photos are practically valueless on a spreadsheet level but immensely valuable on an emotional level. How do you price having your family and friends around you as you pass?
You can still produce value without producing economic value - this was supposed to be the idea behind charities.