I think it’s pretty disingenuous to suggest that not allowing foreskin amputation nullifies all of Judaism. Many Jewish people whose parents decided not to circumcise them grow up to have fulfilling spiritual and cultural lives. No one does a dick check when you walk into synagogue.

There are many ways to maintain the symbolic importance of circumcision without resorting to unnecessary amputation, such as cutting a small mark in the foreskin to symbolize circumcision.