No, it's a Jewish tradition. It's equivalent to banning baptism. Absurd, IMO.
but baptism is just water, it doesn't actually change the body permanently. If somebody who was baptised at birth decides they don't like the religion, they can move on or whatever. Traditions can change - why not jump the legal age of consent to be circumcised up to 14?
But then it may actually hurt, and kids nowadays don't really have a sense of religious tradition. Nobody would choose it, even though it's a good tradition. Besides, what does it matter otherwise.