Boomer, that list while good isn't necessary for most day, just on the days when the braces get tightened and depending on the kid, maybe for a day or so after. Somethings are difficult all the time, like corn on the cob, but unless you've got all kinds of contraptions going on, most kids will scarf down whatever, just not as easily on the days when your teeth hurt from breathing.. When you get braces you become accustomed to figuring out how to eat certain things. It's a right of passage.
In other words, he'll learn to deal with it.
Just maybe don't order pizza on that particular night.