I'm skeptical of any form factor, including lightweight glasses.
Consider the laptop: we still use them today. A laptop consists of a screen and a keyboard designed for the size of human hands, just like a big, chunky $12,000 personal computer sold in 1984. A laptop of today is much faster, cheaper, and more compact and powerful but it still has the same basic structure as a computer from the 1980s.
A mobile phone still involves holding a piece of plastic up to your ear, just like the telephones of yore.
"Spatial computing" is something entirely new and has no precedent other than virtual reality gaming devices that never went beyond a small niche. I'm not saying it won't be the next thing and replace all our phones some day. Maybe it will. I'm just saying constantly comparing it to devices we already use is not quite accurate, because in many ways it is a significant departure from the tech we've been using for decades.