Do you have another son who is a professional driver maybe? Tesla software is like middle of a road tablet, but cars have different usecases than tablets, therefore the UX should be designed differently. For example, picking at tiny touchscreen buttons far away from the driver's line of sight while navigating level of menus to accomplish something driver needs to do (e.g. change suspension levels, or turn on headlights, control steering wheel heater, etc. ) is not great driver experience.
Now, unfortunately other auto manufacturers decided they want to join Tesla in the tablet-on-wheels game, but they don't have even tablet developers on staff - their software development teams are small embedded device software teams. They also cannot afford to take risks like Tesla (Tesla is getting away with things no other legacy auto manufacturer would), so I agree with you that their products (like the iPace) is way inferior. Heck, VW's adventure into "let's just connect everything into a computer like Tesla, then it's easy - software will do the rest" blew up a little in their faces - ID.3's are expected to sit on the lot for a year before they can be delivered to customers (because software won't be ready for a year, but production has already started):
https://ww.electrek.co/2019/12/19/v...s-as-company-begins-year-of-ev-introductions/
Lastly, the tablet on wheels approach seems to be ignoring one thing, tablets don't last as long as cars. Ask anyone who drives a pre-March-2018 S or X with MCU1 how it feels to drive one. The software is getting slower almost every release, it doesn't support most of the new features, and even the features it supports, including ones which used to work before, no longer work reliably or at all. Let's not forget that historically the Tesla MCU hardware reliability is consistent with a tablet lifecycle too - so between 3-6 years, you'll need a new $3,000 Tesla tablet for them wheels due to hardware simply wearing/aging out (emmc failure). You'd think for $3,000 you'd get the latest "tablet", but no, all you're getting is a refurbished old design (MCU1), not the newer tablet (MCU2). Oh, and that tablet is a single point of failure too, so you have to fix it when it dies, as you cannot drive the car with a dead MCU - no heating/cooling, cannot charge the car, etc.