Having read the Rosh Yeshiva's brother's book about the response to his (Rav Nosson Kaminetzky's) book "Making of a Godol," I can only surmise that the zhulikehs are at it again.
I love the 3500 years line. It follows along with the "2000 years of a perfect record" which appears here.
The link will do the best justice - here is part of it. One of the commenters claims that the Jewish Week, which orginally quoted Rabbi Kamenetzky, lied. But the Rosh Yeshiva never said he was misquoted. He just clarified what he was quoted as having said.
"The practice is indeed time honored and is followed by the majority of the Orthodox Jewish community today around the world, as it has been for thousands of years.
To my knowledge, it has not been proven that the practice leads to contraction of illness. The halacha is extremely sensitive to health concerns and it is wrong to insinuate that Jews who are very particular in the care of their children would be engaging in a practice for thousands of years which is inherently dangerous.
We have a sacred responsibility to protect our children from danger and that responsibility is paramount. However, in the absence of an inherent danger from our performing mitzvos or following our traditions, we must follow them. In my view, there has been no demonstration of an inherent danger associated with Metzitzah B’Peh.
The statement that, “I don’t think there is a response to them,” referred specifically to those who allegedly said it would be invalid to use a tube where there are demonstrable health issues present as to either the Mohel or the child.
Similarly my comment that in my community “as far as I know they do metzitzah with a tube,” refers to a case where a health concern has been established and was in no manner intended to suggest that I believe that it should be universally adopted.
In no way should what I said be misconstrued as supporting the curbing of, or outside interference with, Metzitzah B’Peh. In fact, we have very effectively self-regulated the practice over the past 3500 years."