They can’t give their consent for getting vaccines either. Or whether they’re bottlefed versus breastfed.
There’s lots of uproar about these issues too, that certain choices the parents, not the children, make, that may cause permanent, deleterious affects on the children. Do you want to mandate what parents do there?
What about parents that pierce their young childrens’ ears? Is that abuse? Where do you want to draw the line at stepping over the parents’ rights to make decisions for their young children?
As I mentioned to Blacksword once, there’s a de-baptism movement by people who are mad that they were baptised as babies (and therefore, without their consent). Continue down the path of stepping between parents and their children and the very right to raise children in a certain faith will be considered a violation of their rights.