Unless they are going to dictate a lot of technical details this ignores a number of safety concerns. Electric vehicles typically design safety in at the vehicle level. There may be several high voltage capacitors in the system which can kill you in an instant if not properly discharged. Manufacturers also consider things like severed cables in an accident and plan for that when considering how to dissipate that charge in different scenarios.

It will get sorted I'm sure, but there are often technical details that change when changes like this are made.

They will even need to standardize connectors and possibly protocols to really do this well.