I was on board up until this phrase. I don't want my plane behaving as flakey as my Tesla, and my gauges shifting their location around every update at the whim of some junior designer.
Not saying there couldn't be a manufacturer that does OTA properly, I just haven't seen that as the trend in any other space (cars, smartphones, etc). The OTA part always seems to benefit the manufacturer, not the user. ("Watch this ad to take off....")
The process right now is pulling out an SD card from your Garmin/Avidyne/BendixKing whatever every 28-days or so (that's how often the FAA updates the navigation database backing these avionics), popping it into your PC, using software/webistes that could be... much better designed (to put it lightly) and then going back again. It's not exactly the hardest thing in the world, but it's not exactly a walk in the park either (especially for less-technically inclined pilots, who just let it lapse, and click out of the big expiration warnings every time they start up their planes).