It's a little harsh to claim they're advocating for a nonstop work grind culture. They're just pointing out that most young people will have to work harder in the beginning to get to a point where you have flexibility and enough savings to start affording better work/life balance.

Life isn't all about work and I get that, but I see so many young people acting like being asked to work is being sold into slavery (it kind of is) and it's beneath them to have to do it at all.

I had many shitty (low paying) jobs also in my young life, from news librarian to title searcher (which is probably all done on computers now instead of climbing ladders to look at dusty books). That doesn't mean everyone should have a shitty job, just that it's necessary when you start out to put your nose to the grindstone and not expect a whole lot of perks right away. And I'm all for people doing what they love - but the reality is you have to also pay your bills, rent, taxes, car insurance, etc.