Godwin's Law. Someone should tell these Rabbis that using arguments considered laughable even by the online community isn't going to get them anywhere. They look pretty pathetic to be honest.
Circumcision isn't a big deal. I was circumcised for medical reasons aged about 7 or 8 and it's never negatively affected my life. But anyone who tries to tell you it's OK to circumcise children for religious reasons because it's unlikely to cause much harm to the child is missing the point. The idea of performing an irreversible medical procedure on an infant to permanently brand them as part of your religion is, in the modern age, barbaric. If you think 'being traditional' alone is enough to justify an operation to forcibly remove part of someone's body when they're too young to consent, I fear for your understanding of what constitutes a just society.
Let Judaism keep its rather creepy obsession with cutting bits of skin of people's dicks - just do it at an age when the people whose dicks are being cut up can make the choice for themselves.