Those are all complaints about bottom-tier American food. A good cheeseburger from a local place is mindblowing. I had one with peanut butter on it last week; we still eat allergens but they have to be labeled. Mexican Coke is way better, true. You're talking about Hershey's chocolate bars which no one considers to be "the good stuff".

If you're looking at McDonald's and saying American food sucks, you're missing a whole hell of a lot.