You’ve funnily proven the point of how willing people are to put immense burdens on others in the name of safety.

There is a non-zero amount of deaths the car seat law would prevent. The burden will discourage larger families and will contribute to population decline far larger than the lives saved.

You’re not only arguing for it, you’re doing it in a way as if preventing death is such an obvious single dimension to optimize that you’re calling people irrational because they are against something that reduces fatalities.

Your same argument is what leads to prohibition and a long list of other things that suck the color out of life in the interest of “safety”.