the blocked rule (read: The rule that DIDN'T go into effect, IE, nothing really changed) would have required pizza manufacturers who provide school lunches for those school that choose to follow the guideline to count their pizzas as having less vegetable content. In order to make up the difference, they just would have added more tomato paste, because like it or not, tomato paste is actually fairly nutritious.
How it stands currently is that an eighth of a cup of tomato paste is counted as having the nutrition of a half cup of vegetables - and it's really kind of hard to argue - "half cup of vegetables" is a really weird thing to measure to begin with, but if we even try to measure it against a favorable opponent, the fresh vegetables are MOSTLY water when compared to the paste, which contains almost no water.
So congress didn't declare pizzas as vegetables, or even make any real changes that involve pizza, they only decided against adjusting a rule that makes sense. Nothing changed with the pizzas. While I don't personally think that pizza is "health food", there are CERTAINLY worse things to eat, and there's not much better for kids to eat that they're actually going to be excited to eat.
Could the pizzas be better? more nutritious? of course, but if you completely remove the concept of pizza as a viable option just because it can be greasy and bad for you, then, you just have fun eating your twigs.
Nothing changed. Learn what happened before you decided to make stupid threads about stupid things that were misunderstood to begin with.