My first impulse was to dismiss it as unrealistic.
Also it’s not a really pressing issue to me as I switched to laser-only and LAN-only.
Then I realized teaming up with Lulzbot and some cartridge refill/replacement company could make the missing pieces achievable.
The RMS reference certainly has something to it 
But actually, then I realized printers have serious privacy problems most people are not aware of.
Still I think we’ll see a tablet, a NAS / router and a RISC-V device before a printer.