The main concern of the average person is to not look like a dork. Second, is interoperability with the services upon which they rely. So, privacy concerns won't matter to most, but being trapped in a Meta garden will.
> This is a very “inside baseball” take. The average person just does not care at all about privacy from large corporations
Google Glass remembers…
I think the biggest hurdles to widespread adoption are ease of connectivity (getting pics and videos “out” of glasses and onto phone/laptop/cloud), ultra high def images, size of on device storage, and battery life. Those are tough, given the form factor. But, if cracked, these will be huge.