Pretty sure this is a reference to the cases where Tesla has revoked different features (SuperCharger access, AutoPilot, extended mileage) from cars.

Sometimes that seems to be because they had the feature enabled by accident or the car was declared as totaled but I haven't been tracking the cases closely enough to be definitive. Not sure that anybody is.

SuperCharger access has nothing to do with "owning your car". Less so but still ditto for AutoPilot, as it is not a piece of hardware but rather software that is constantly being updated and honestly dangerous to deploy/use if Tesla cannot guarantee the integrity of sensors/drive-by-wire mechanisms/etc.

Extended mileage does seem weird though – they've revoked software updates that have extended mileage? That would be shitty if true (if not for a good reason), but I honestly haven't heard about that one. And I'd still argue in favor of this being ownership, as updates are not your right as an owner of the vehicle (and with every other car you've ever owned don't come with the vehicle at all). At the very least you always have whatever features you had when you bought the car from Tesla, which is exactly what you expect from any other car you purchase.

No you do not.

Tesla can change the settings of the car without asking you.

For me to change the settings of "my" Tesla I need their permission, which is not available.

My electric car will not be connected to the Internet, it will have no wireless network access of any sort. None.