Earlier quoted context omitted.
I think he's well within reason. If you were assaulted by a cashier at McDonald's, would you just ignore it and continue on? I'm pretty sure I would try and get the perpetrators fired and possibly charged, and have the company pay for any damages to my property.
I agree, he is well within reason to get a lawyer and sue the pants off of McDonald's in civil court if his case is accurate as he describes it. He's not asking for that though. What he basically wants is a public apology and for McDonald's to FIX his glasses. This is laughable. Notice how all aspects of this story point to how awesome his glasses are: "they help with a medical condition", "having them fixed is more…
He says:
I'm not seeking to be awarded money. I just want my Glass fixed, and it would also be nice if McDonald's would see fit to support vision research.
Which means in any sane interpretation to be that he wants McDonalds to pay for whatever it costs to repair or replace his property, but he is not seeking punitive damages for the assault, he just wants his glasses fixed. And he thinks it would be nice if McDonalds made a gesture of donating something to vision research, to show they are actually sorry.