Circumcision is definitely medically necessary for those patients (including infants and children) whose severe phimoses do not respond to more conservative treatment. Failure to circumcise in those circumstances risks nerve and other tissue damage that can make intercourse (and even masturbation) difficult to impossible, and can make normal urination a challenge too. This can lead to hydronephrosis and renal failure in the most extreme cases. Necrosis of not just the tip of the foreskin, but of the glans (or head of the ) penis can occur.
But most other medical benefits of circumcision tend to be relative, and certainly don’t merit mandating the procedure. Or even recommending it most of the time, IMHO.
QtM, MD: former circumciser of infants, who gave it up due to lack of true medical necessity to do the procedure in 99.999+% of the cases.