Why not? Everybody else is making it. Besides, it gives the commenter that oh so delicious smug sense of unearned superiority. Besides, everybody else is doing it. Except..
>It's like when you see people buying a rifle in Walmart - Only in America.
People buy rifles in all kinds of stores all over the world so why would Walmart be any kind of exception?
>Or when they're getting a one-gallon cup of Coke from McDonalds,
This literally does not exist.
>or drive away from a fuel bowser with the hose still plugged in
People do this anywhere they are allowed to pump their own gas. FWIW in my 40 years, I've seen the aftermath of this exactly once.
To respond to your other comment:
>I disagree - I don't watch any [mass media]. This honestly seems like exactly the sort of corruption I'd expect to hear about in the US...
Except according to the corruption perception index, the US is less corrupt than most European countries[0] including the likes of France, Portugal and Ireland, and far less corrupt than the vast majority of countries in the world. You claim to not be watching the media but you're getting your false information from somewhere so maybe turn that off too.
[0]https://en.wikipedia.org/wiki/Corruption_Perceptions_Index