Pretty sure your uncle doesn't drive his back hoe 120km/h down a public road. Also atleast where I live back hoe equipped tractor needs to be licensed, driven by tractor licensed person to travel down public road. If it isn't so, it needs to be trailer loaded from work siteto another.
Also tycally to commercially operate heavy machine either industry regulation or just business sanity demands trained operators.
I would note, you don't need drivers license to drive a car on private closed road. Go crush oneself in car volt on private yard all one wants, the issue is untrained person driving on public road endangers others. That is why there is also demand for traffic insurance for the other parties damages, not ones own damage.
That's what the "don't take when operating heavy machinery" labels on medications are referring to for most people, I'm not sure how many people actually realize that though, and that's a scary thought.
Cars do have speed limiters. You need a license, registration, inspection, and insurance to drive a car. And where exactly are these "many places" that ebikes are banned? Do you mean ebike rentals? Because that's not the same thing.
Forklifts are typically heavier than cars, easier to tip, come with piercing forks and, are operated in pedestrian heavy areas much more frequently. You can be certified a lot quicker and easier than it takes to get a driver's license, and typically you won't be the one registering and insuring the equipment. And that's just one specific type of heavy equipment.
That depends on the type of ebike, surely? Here in the UK/EU ebikes are limited to 250w power, motor only active when pedaling, and a max speed of 25kph. I regularly get over 25kph on my acoustic bike, should I also be banned from bike ways?