While the exploit that allows them to run arbitrary code is unfixable, that doesn't mean Tesla couldn't update the vehicle to make accessing these features more difficult. For example, simply not delivering chunks of FSD to unauthorized vehicles server-side.

I guess my point is: This will start an arms race. Eventually you'll need to pick between an on-network Tesla getting software updates from them, or an off-network Tesla with FSD and other things that unlocked can provide. Heated seats can likely be re-enabled electronically without software (i.e. splice in a switch).

Personally, purely from a utilitarian perspective, I wouldn't choose to use FSD that wasn't getting continuous updates because it may not include road changes, state law changes, and frankly still has a lot of room for safety/reliability improvement. Maybe "Enhanced Autopilot" ($6K) just for lane change.

PS - 9/10 of Tesla's recalls have been software updates. So you'd lose those with an off-network Tesla.