I take that back... there was no distinction made in the post between North and South Korea. Your post states only South Korea. I have done some research and found nothing yet about North Korea, so for a broad judgement about Korean circumsicion being high, I think proof is still needed.
I stated that "Korea has a very high circ rate."
I guess in this context it's not clear that we are talking about South Korea. Except that the poster mentions that they live in Seoul.