It's worth pointing out that absolutely nothing about this interaction was corroborated except for the fact that there was an issue and the customer left.

If someone had their phone up and continually aiming it around the room, then you can be sure they'd be asked to stop or leave. The problem with Glass is that you cannot tell if they are or not. Rather than risk their customers being uncomfortable, they decided to be proactive and protect them. That seems perfectly reasonable.

There's absolutely nothing wrong with this argument. That's why it's generally accepted for people to set up video cameras in locker rooms. I might have a photographic memory, so you might as well let me video you.

The restaurant is trying make a comfortable atmosphere for their customers. If they feel that someone wearing a camera on their head will make their customers uncomfortable, they have every right to not allow them to wear it. Your response makes you look like an entitled child who gets upset when they are told no.