In general I don't think that the style of work that leads to burnout is desirable at any stage unless if it's for your own startup and perhaps not even then.
One day I woke up and grey haired and not rich. I felt that my youth had disappeared, I had various minor health problems. Why did I work till 2am for a fortnight to solve problem X? The project was cancelled after I left or never made any money or whatever - it was for no great achievements. I got laid off anyhow.
I encountered plenty of people that generated fear in others pushing towards excessive work but I noticed every one of them going home at 5pm. Do you have to take note of these bullies? Maybe not - I didn't notice them being any worse to the people who ignored their pressure.
Don't encourage other people to overwork either - be part of the solution.
It's the people that you work with who will be grateful sometimes, in small ways and overcoming problems with them creates friendships. So you must obviously try to pull your weight - I'm not advocating cynicism.