The parent was talking about people choosing to wear these. Today there might be reluctance to wear them because they're creepy or uncool. But that mirrors the reluctance for cool kids to wear bluetooth earpieces back when they were those chunky Borg-looking things. Then they got shrunk down. They got "high quality, convenient, [and] light".

When these types of glasses are virtually indistinguishable from regular sunglasses, and a critical mass of cool people wear them all the time, the reluctance from the rest of us will melt away.

I hope I'm wrong. Really.