Regarding discharge protection and BMS safety I completely agree with a hybrid approach of discharge protection with a grace period to alert the user if the device is armed. The main issue with battery safety is when the device is left unattended charging, but I do agree that ideally it should be shutoff completely while unattended. However, when riding, I would rather my board start smoking and catch on fire than ditch me going 25mph. Obviously there needs to be a hybrid approach as you describe as the current situation is not optimal.
Yes, the EUC market is a prime example. There aren't actually that many VESC EUC builds because there is so much competition it is not needed.
Regarding "drinking the kool-aid" and "the pioneer of a technology not is not often the one that sees it through to maturity", I feel like a prime example was the Boosted boards.