Obviously, you need to RTFA, and perhaps do some examination of your own thought process.
1) The glasses are not a recording device. The only reason they maintained images was because they were damaged, and new images did not arrive to fill the buffer.
2) Anyone who attempts to rip someone's "recording device" off their head only to find out that it is SCREWED INTO THEIR SKULL is an idiot if they don't realize after that fact that this is not the same situation as some guy with a digital camera. You could make the analogy that while pets are banned from many places, service animals are welcome.
3) Destryoing someone's documentation about their medical device is spiteful and childish at best, and legally questionable at worst.
4) One would not attempt to hide their identity while taking a perfectly legal action in accordance with company policy.
5) Obviously, the gentleman was angry enough to want to go to the top of the food chain (no pun intended). So even if this McDonald's was in France, the corporate HQ is in the US. So yes, attempting to get the corporate information from a US/English Language page makes perfect sense, rather than going to a "french-language" website where he can perhaps try to talk to the manager of that particular store.
He'd already been served his food - if the restaurant wanted him to leave, their best course of action would have been to wait a few minutes and let him finish up. It certainly would have caused less hassle and embarrassment to everyone.