L.,
What I'm about to say I KNOW someone out there, if not quite a few moms, are going to get very upset...but YES, It is a parents Laziness that is causing these kids to be interested in the character shape candies and it is the parents fault their child is overweight. WE ARE THE PARENTS! WE say what goes. I will admit, as one mom already has, that kids do not always respond to 'NO' the first time, but guess what... say it again then. Don't give in!
I know this may seem harsh, but my oldest is limited on ANY type of outside sugar that is not nutrition food based. This means NO Candy, NO 100% Juice, No Fruit Snacks. He didn't even know what a lollypop was till he was almost 2 years, and didn't know what a french fry was till he was over a year old. His daily sugar intake is limited to 30g-40g of sugar a DAY. One 8oz glass of 100% juice is 25-30g alone. One granola bar is 10g-12g. I have to count everything.
Now on topic, he is only 3 years old and has learned he is not allowed to have candy, he is not allowed to drink soda, he is not allowed to have goards of ice cream...why? BECAUSE I TOLD HIM NO AND TAUGHT HIM THAT!!! HE is the CHILD, I am the ADULT!
I provide his drink and snack everyday for school and daycare. The other kids may be eating pop-tarts, coffee cake, whatever the daycare wants to provide, but he knows he is not allowed to have those things. He eats his bananas, goldfish, crackers, pepperoni and cheese, pretzels, or whatever kind of snack I provide for him and usually the teacher states the other kids want what he has instead of what the daycare gives them.
Kellogg’s putting characters in their snacks is a marketing/promotional gimmick. But if you can't tell you kids ‘NO’ then it doesn’t matter whether the snacks are character shaped or poop shaped. Either way, is your own issue as a parent, not Kellogg’s.