I'm sorry but I'm not with you on this one. I understand your point about the "blade safety technology" being pushed onto everyone, but truth is, no matter how experienced you are, you can always hurt yourself. My dad always told me that he never forgot the first day of his classes back when he started learning to use machines in the shop: his teacher, showing his two missing fingers from a hand, simple stated that
in the shop safety always comes first. And yeah, that includes "adult pride".
This guy is quite skilled and clearly explains in the video that he's never had an accident with his "big" lathe because he respects it, but got complacent with his "tiny" Sherline. So in the end, it was the tiny, seemingly innocent lathe what ended up crushing his finger:
If I understand correctly the motor started for a second (some residual charge in the capacitors or something). Enough to have a serious injury. That's why machine manufacturers try to put as many protections built in as possible.