People optimizing for grades is so sad. I got a BS in CS and no one has ever asked about my grades. I tried to optimize for learning and it turns out that pays off really well once you hit the real world.

If you want to be a MD or a JD, then you must optimize for grades. The entrance into post secondary education requires it to be so.

Seeing as the article was about Brown and their PLME program is famous for med school acceptance, then I think we should expect that the culture there is more about grades than a generic undergrad university's culture. Which, yeah, is also very grade focused.