They are not "stealth smart glasses", they are the first iteration of AR glasses. Recording is one of the many things they do. And I'd buy them in a second if it means I don't need to take my phone out every few minutes (and if I had the money, I expect them to be uber-expensive); or I don't need to look away from the road to check directions as I drive; or I don't need to reveal in-shop that I'm checking online prices for an item. There are a lot of possibilities beyond capturing, if not in this generation in the next one with displays.