There are folks who turned that into habits that unlocked productivity and happiness in life. There are others who just got exploited.
To me, what's important is building the intuition for the connection between practice and achievement, which is a subtly different thing. It's not hard work for as a thing that's morally admirable. It's a means to an end.
I would add to that a sense of collective responsibility, tempered with self-assertiveness.
I think these things are the bright side of valuing "hard work", but without the dark sides of exploitation and workaholism.