I don't personally see the appeal of hands-free as a paradigm in most cases. Do we really want people talking on and looking at Zoom as they walk around the office? Or as they drive? Or as they are out shopping? I also see ESPN and YouTube, so yeah... this thing better detect when you're moving at speed and disable video apps.
I'm just struggling to see when you would be in a setting where you should use these, that you shouldn't be using a device you already have. It's like trying to sell me on using a smartwatch to take voice calls: sure, there is exactly 1 situation I can think of where that's useful, which is getting a call when I'm out running and don't want to "lug" a whole phone with me. But I sure don't want to be wearing glasses when I otherwise don't need to (and these aren't prescription, so you are), just in case someone tries to Zoom me unplanned.
Can you imagine how goofy you'd look sitting at a coffee shop and just sort of staring into the middle distance and talking, as you take a Zoom call?