“Sixty thousand denominations now . . .”
I thought that was a bit much too, thinking that thirty thousand is the correct number. Or maybe it was thirty thousand just in the USA; he’s speaking world wide.
If you are at all genuinely interested in what the number might actually be (nowhere near even 30k), here is a good source: The 33,000 Denominations Myth.
Funny thing about this myth is that it seems no matter how many times such a statement is disproved, it pops up again as if no one ever knew any better. Hopefully, you might not be among them once you read the link.