Given the fact that common european microwave has two big mechanical knobs (timer and "power" typically implemented as fairly slow PWM, probably mostly mechanic

Given the fact that common european microwave has two big mechanical knobs (timer and "power" typically implemented as fairly slow PWM, probably mostly mechanically) and door switch for power switch it seems to me that overly complex UI of other microwaves (as well as existence of these patents) seems to me being primarily motivated by someone trying to market microwave as high-tech gadget instead of simple kitchen appliance.