That is very, very interesting. I've been hoping to have an assistant in the workshop (hands-free!) that I could talk to and have it help me with simple tasks: timers, calculating, digging up notes, etc. — basically, what the phone assistants were supposed to be, but aren't. "You will have to unlock your iphone first" is kind of a deal-breaker when you are in the middle of mixing polyurethane resin and have gloves an…
Siri does have a setting that'll activate it if you say "hey siri" while the phone is locked. Obvious privacy and battery usage concerns though, and it's still Siri, so it's a little clunky.
It's clear Tim Cook doesn't ever try to use Siri wearing gloves. Or ever, for that matter :-)