I have never owned or even used an Xbox. Though I started programming in 1969 — or maybe because of that — computer games have never held any appeal. Yes, sure I have played a few and maybe written some rudimentary gaming code, in the 1970s, just to make sure I could do it. But, that is the extent of I and my intersection with computer games.
CD/DVD drives maybe mechanical BUT they are 100% digital — as the ‘Ds’ in their names signify. ‘D’ for digital.
What these folks are trying to say is ‘SOLID STATE’. No moving parts. Everything electronic — no mechanical components bar the BUTTONS.