I found cleaning poop out of all the various nooks and crannies it got squeezed into required some letting go of habitual notions of propriety.
The possibility of disease is an issue with this circumcision ritual. How big an issue I don't know, but surely not difficult to manage. But that isn't REALLY what is bothering people. What is bothering people is that this looks like some kind of pervy sexual thing. But there is no indication that it is in any way sexual. In fact it is probably a very ancient practice that made hygienic sense 1000 years ago and is now just a ritual that could be replaced with something more hygienic. But it has become part of the ceremony. So what? It would seem to be entirely lacking in sensual pleasure. Certainly for the baby. Probably for the mohel. It's not like he is sitting there giving the baby a BJ in front of everyone.
Breast feeding, on the other hand, is clearly a pleasant sensual experience for mother and baby both, and is purely sexual among adults (and to some extent with the mother and baby as well, if you ask some psychologists). But only the most rigid puritans find breast feeding disgusting. Why the difference?
It looks to me like the disgust over this ritual is purely a matter of cultural conditioning. If anything, it is the cutting that is a problem. That's a painful and permanent disfigurement that the baby will live with forever. But I will wager that many of the people who get bent about the sucking are fine with the slashing. Cultural conditioning again. Go figure . . .