It all seems quite absurd.
1st, that Amazon would conceive of and file such a patent.
2nd, that the U.S.P.O. would approve. But they have, and granted it.
No worries though, the patent spells out in excruciating detail a very very specific lighting set up, specifies distances, light specs, materials, f-stop, ISO used.
Claim 25 regarding method gets rather generic, but 25 gets nailed down to specifics by 26 and 27.Full text of the patent.
It's pretty unlikely anyone would ever duplicate this exact set up.
I'm guessing it's a staged lighting configuration specifically intended to create a specific look to be used as a signature style.