I'm guessing it's simple aesthetics, but also there is no lettering to "wear" (not really an issue with quality keycaps), and you can rebind keys without being

I'm guessing it's simple aesthetics, but also there is no lettering to "wear" (not really an issue with quality keycaps), and you can rebind keys without being "wrong". I've used blank keyboards over the years and the lack of printed keycaps is a look all its own.