Appreciate the perspective, but as a career hacker, none of these are excuses that register with me.
> I have no meaningful influence over the products I buy in the supermarket
I have talked to staff at small markets to stock items that give me reason to shop there more often. It is amazing what people will do for regulars.
> or my apartment building's elevator programming
Hacked elevators many times. You can buy elevator operator keys for most cities on ebay. Look for pentesters keychains.
> or the entertainment cluster of modern cars.
I have jailbroken or replaced systems like these more times than I can count.
> FreeCAD is basically unusable
I use FreeCAD to make things all the time, and it is easy to hook up automation tools and scripts to. It has come a very long way in the past couple of years.