Nah, I don't care about how it looks ... to me a MacBook just a tool, and I'm going to add my own dents and scratches anyway. Now I'm glad I have a replacement with a working keyboard (my previous three MacBooks all had malfunctioning butterfly keyboards), and I don't want to wait another two weeks.
I have attached a photo. It's tiny, so I don't care. Just the fact that there is a dent at all made me sceptical.
Unacceptable in a product sold as new. My 2015 has a similar dent but it's used and I paid about 40% of new for it. You'll lose something for it when you resell it.