No, neither would I. I was agreeing with the commenter you replied to, that I'd expect a plastic laptop to crack, and a metal one to dent. If it has to be damaged, I'd prefer the dent.

You said above that that was more to do with 'top finish' than 'material'; that's what I was responding to - how would you finish crackable plastic material to make it dent like aluminium/alloy instead.