If tomatoes are so bad for cats then why is fancy feast putting them in their cat food?

I went to feed my cat his favorite turkey primavera from Fancy Feast. I know there are veggies in it, but some of them look red. And I know red is tomato, which is bad for kitties. So I read the back of the can, and sure enough, tomatoes were listed. Last time I checked, feeding dogs and cats tomatoes was a big no no. So, how can a company that manufactures cat food, put such an ingredient in their product? Any ideas?