A few issues I see with these (and all smart glasses): it cannot replace a phone, battery life will be terrible the first few years and it really doesn't solve the attention problem smartphones cause. I'd rather have an audio only device.

I only use my Apple Watch Ultra and one AirPods in for a better (albeit not perfect) solution to limiting screen time. I feel smart glasses exacerbates the problem. At least with a smart watch it can already make calls and send messages.