Earlier quoted context omitted.
> The Wi-Fi is useful [...] Performs updates, etc. Ah yes, get wifi so your dishwasher can get security updates, which you need because your dishwasher is on wifi.
Updates improve wash efficiency, etc. Not just security updates. Maybe a new cleaning powder comes with a new algo. Maybe there's a better dosing for certain levels of water hardness. But the gist is that it updates the whole module. I'm fine with this, Miele are like Bosch in that they look after the hardware they sell for decades rather than considering it deprecated the day it leaves a shop floor.
Ah, fantastic. "Now that we have updated the firmware, we have determined that you need the new proprietary cleaning powder. For your convenience, the dishwasher is disabled until you supply the proper cleaning powder."