As an American I also have not gone to any of those restaurants.

The thing is, America is the China of food[0]: we make shittons of unsafe, dangerous product and foist it onto the market by burying the market's pricing mechanism under a mountain of garbage until nobody else can compete and we dictate the price.

People will note that China makes plenty of safe, normal products too. The same applies to American agriculture, but that doesn't matter. The problem is mainly that the industry has absolutely no standards. If they can go a few cents cheaper, they will.

[0] And, prior to this century, we were also China in general - a lot of our manufacturing was stolen from Britain and ran for far cheaper.