Just my

...*gets on high horse* This is outrageous child abuse. Go cut your own foreskin off if your Imaginary-friend-game makes you want to (I believe in the right of individuals to inflict damage
on themselves), but you're not allowed to cut anybody else's off.
I know there is a huge spectrum between whacko cults that practice child rape and teaching your child religious values... we all have to draw the line somewhere, and I draw it (somewhere) in the area of psychological manipulation with guilt and fear of eternal torment. This case is well on the BAD side of that line.
Suppose Dad wanted to snip for purely aesthetic reasons. Not a chance he'd be allowed. But for religion, we make a serious case for it?
Sorry for the rant, folks, but religious nuts inflicting their views on
other people gets my dander up. *gets off high horse*