> Does the Ryzen system come with a full aluminum enclosure?

If you really want one you can get one.

But if you are buying a laptop on the basis of how shiny it is does the CPU performance really matter?

When I bought a car for my wife she picked it out on the basis of how cute it is. She isn't going to run around being upset that it doesn't have 0-60 time of a Subaru WRX. To her the Subaru is ugly.