I have 2 adults kids. I know they completed all of their assignments, plus extra credit assignments if they were lucky enough to get those. Both of them were going into the kind of careers that GPA mattered and their school (both of them went to the same school) graded on curves.
I work with a lot of new graduates and I pay attention to their work. No matter how good they are, if they couldn’t pay attention to detail then I don’t want them on my team. Doing your homework is the minimum you could do in each class.