Uh! I didn't think they were banning junk food, but only offering healthier choices.....
In other words, when at a TS or CS you will have a choice between grapes and fries. Grapes will be given to you unless you say you want the fries instead.
As for the rest of the junk food along the streets, like snacks, those aren't going away as far as I know. Dole Whips, rice krispie treats, and ice cream sandwiches will still be available as always.