It’s just another entry point for the Welfare State. Preschool will turn out to consist of feeding and clothing kids and probably parental indoctrination.
Any parent who entrusts their four year old-or any other age-impressionable child to a government school/daycare does not care about that child, or believes that it is someone else’s job to care for and teach that child. I’d prefer to see preschool programs operated by religious and private concerns, and schools either chartered or private-get government out of education, it does not belong there.