Not sure how much you can consider Work/Life balance a key value when you expect people to work 50 hour weeks ( https://www.keyvalues.io/kite ). Not to say that 50 hours is awful, there's certainly a lot worse out there, but I'd say it's enough to disqualify that as a 'key value'.
You've got people bringing home $150-350k/yr plus every imaginable perk fretting over the idea of putting in more than 40 hours a week. Even high-skilled high-pay workers (medicine, legal, and finance come to mind) put in lots of hours without whimpering about finding a balance, much less the vast percentage of the population who hold blue-collar jobs and clamor for overtime pay.
If someone doesn't feel they should work more than 40 hours, then by all means don't take that job, but please drop the damn sense of entitlement. This bubble will not last forever and one's ability to crank out an Uber-for-X clone in NodeJS won't always pay the bills.