BTW, the documentation they "allegedly" destroyed? I wonder how it was worded and why his cameras could possibly be considered medically necessary. Just idle curiosity, but that was what struck me most about that other article.
I followed the posted link, which had a link to the guy's blog. It wasn't clear what the glasses do exactly beyond "help people see better" but as for the medically necessary part - they cannot be removed without special tools. So IMO anything that is essentially permanently affixed to a person's skull, is at that moment medically necessary because its necessary to not remove the item without causing a medical issue/injury.
There are also photo's - from the eye device - showing the people rip up the documents.
This is craziness straight and simple to me. No where in the story does it say he was simply asked to leave
. To me that would step 1, step 2 and step 3 that should have been taken before physically assaulting him or even questioning him. Just a simple "I'm sorry sir, but we do not allow such devices in the restaurant and we must ask you to remove the device or leave." Then a manager "sir, you have been asked already, we are telling you, you must leave, now." and then finally "sir the police have been called. If you do not leave this instant we will have you be forcefully removed by the authorities."