Its pretty clear.
For every little link you give me about 'zipper injury' or 'bathroom splatter', I can give you links about 'cornification of the glans', sexual desentization or etc. The fact is that none of this is proven or clearly established. There are good arguments both ways. Let adults figure it out for themselves and if they want to slice and dice their own anatomy, let them.
We in the west scream and cry about the horrors of tribal genital mutillation. Meanwhile, we take knives every day to tens of thousands of male children. Its the same thing, no difference.
Yeti