> no ones playing games, recording videos, taking pictures or doing any kind of immediate activity with smart watches.

This is a good point, but my point was more that if a smart watches are doing less than a smart phone and people still seem to be happy to have to charge them everyday, I'm not so convinced that having to fast-charge a set of AR glasses for time-limited use would put people off if they felt it was useful enough.

For context, I was imagining that most of the AR/VR overlays would be time or context dependent. Perhaps when travelling to aid with directions or on a commute for entertainment.

Are people really going to be walking through life with an always-on HUD? If they are then yes, completely fair point around battery usage. Perhaps once a global network of wireless charging is fully operational this will be a problem of the past...