Oh come on, it's only 7,000 cells. What're the chances something could go wrong?...
The counter point is that Tesla fires have not occurred.
As for Jack's flip-flopping about bms's, that's called gaining experience (he now admits over/under voltage protection is needed).
It wasn't the shunt-open failure mode that caused any of those fires (that would just drain a cell), it was the bms failing to shut off the DUMB charger.
EV's should use a SMART charger that will shut off at the correct voltage. IF you choose to have a bms with the ability to de-power the charger it should be a secondary backup to the charger shut off. This provides double safety.
I am unaware of a single failure using the system I describe.