If he ever read the manual for the car (no one ever does! they should!) he’d know you can remove the tow hook cover and connect a battery to the wires to open the frunk, then replace the 12v battery yourself if you’d like. Or if that’s too complicated, have it towed to a service center or mobile service fix it for you.
It’s just a car! Fix it yourself or take it to service! Why is this news?
Either way you're replacing the 12v battery before you're driving anywhere, Tesla or otherwise. Having a manual lock may be nicer for easier access under the hood in this case, but that's really it. Other automakers EVs also have issues with their 12v systems dying and bricking the cars until replaced, Hyundai's come to mind specifically. Newer Teslas have a lithium-ion low voltage battery (it's like 15v or something i think?) that shouldn't fail for the life of the car, so this is a non-issue.