What can I do about this food issue?

About a month ago I started watching a couple of my elementary aged grand kids after school. When they get home they want to eat, of course. I give them cheese or a banana. Maybe a turkey sandwich or some cereal. Whatever we happen to have on hand. Today I’ll be making baby pizzas for them….tomato sauce on an English muffin topped with Mozzarella cheese.

Well, my husband has started bringing home junk food saying “Oh, they’ll love this!” Cookies, chips, cup cakes, some sort of fake fruit smiles thing—it’s a drink of some sort, but it’s just sugar water. Just JUNK. The other day he brought home some cereal, Cheerios and Wheat Chex for us, and Corn Pops “For the kids.”
I said, “That’s nothing but sugar there.”
He said, “No, it’s not! It’s made out of corn!”
I said, “Come on. You remember when that stuff was called ‘Sugar Pops,’ until they changed it 20 years ago!”
For the most part, the kids ignore it because their mom doesn’t have crap in her house but that could change….why is my husband doing this?