This anti-work ethic you see crop up once in a while is delusion. Success comes from perseverance, not idleness or detachment. A few days ago, there was an article from some CEO claiming that you don't need to work hard to succeed. Today, we have an article from HBR cautioning about becoming too invested in one's work. This sentiment is dangerous. It's harmful to teach young people to be cynical, indifferent, and laz…
It's a very real phenom.
Also - consider that most 'extremely hardworking' bankers and lawyers are not creating jack (!) rather, they're competing with one another for customers and status. If they all chilled down none of us would notice in terms of lower value creation.