Doubtful, from my view. If that system is causing a fire or electrical overload, you have to have the capability to shut it off. That’s why all these systems have off switches anyway... safety. Doesn’t matter if its the O2 system, if it is a risk to the safety of the aircraft, there has to be a know to disable it.
know->knob
At least the ADS-B should be locked down, forget the squawking.
How many times in my 13 years airline tenure we had massive electrical incident in flight? Nada, zero. We had one engine feathered, one flame out but no major electrical failure. I think they should mandate to lock down the transponders can’t be turned off.