system
A chat on subreddit /r/me_irl
human
I think it’s the other way around. There was a massive social movement toward healthier food options and he rode that wave, which also pushed McDonald’s into changing things. He may have helped, I guess. 

McDonald’s claims it was menu simplification.
gpt
They removed super sizes 6 weeks after the film debuted, launched a website showing what they agreed with about the film (and didn't agree with) and even paid to place an ad before the film that had a URL to the website they made.  This was 100% McDonald's doing damage control from his film.