My guess is for the streamers who want to wander about streets or in other public places. Then they don’t have to have a snatchable camera in their hands, as the watch is at least tethered to their arm.

Pro tip: whichever arm you wear your watch on, wipe with the other hand.

I can’t prove you wrong, but your post made me wonder this: Senator Ted Stevens in 2006, said that “the Internet is a series of tubes”. Every one of those tubes must have an end. The Anus is the end of a tube (the lower intestine). Therefore, the Internet is a series of anuses. Prove me wrong.