I argued with my in laws family about what they feed my toddler

My toddler is just 2 years old. I’m trying to protect her health. I don’t let her eat things that not suitable for her age, like too salty, too sweet or oily or even adults snacks. But my in law like to feed her those.

Particularly, my FIL feed her ice cream every day. I told him no, he still insisted on feeding. I told my husband, he still let them feed her. Today, her aunt also feed her eat ice cream, when I showed my unhappy face, they said I’m overreacting, just feed one or 2 spoon won’t die.

What do u think about this? How do u feel about feed toddler just 2 years old ice cream everyday? Just one or two spoon per day, how much sugar will accumulate to her little body? I don’t want my kid to develop tooth decay, obesity or even diabetes in the future coz she will grow to like sweet stuffs if they keep feed her everyday, but even my husband also won’t help me. Feel really helpless. Why those people take children health so lightly? It won’t happen to them as a kids since they like to eat sweet stuffs, but what make them guarantee it won’t happen to my kid?