Maybe it depended on use but I had this 2012 mbp that would be shoved into a backpack with heavy textbooks for 7 years before graduating to a lighter packing in the backpack. Never had issues, but the 2020 intel macbook air I bought that just sat on my desk during covid did develop those imprints within a few weeks it felt like.

Well as I recall 10 years ago we would use keyboard covers , and those caused imprints, but the keyboard alone never did. I cant imagine you could even use a keyboard cover today. Kind of just worse design all around on these laptops.