The massive cultural backlash against fast food and McDonald's in particular in the 2000s made the company really self conscious, people have already mentioned Super Size Me, but it all started with a book called Fast Food Nation in 2001, which was also later turned into a movie.
McDonald's and fast food in general was one of the Great Satan's the left would spazz the fuck out about constantly like they do about "white supremacy" and Donald Trump today, it was in hindsight an early warning sign how irritating the left was, all they did was make fast food worse, I remember that shift where in the 90s everyone loved fast food and then in the 2000s everyone would bash it constantly, it's also ironic that the left doesn't care about fast food anymore, but the damage was done.
The different companies reacted in different ways, McDonald's went for a Starbucks style "classier" approach, other places like Burger King slathered everything in irony.
It really sucks the way the left gets outraged about something and that only results in the soul being removed from the object of their ire, happened with pop culture and their spazzing out about "muh diversity and representation"