No I didn't. I have only read a blog post about setting up a public node, where this number was written and I took it as "low", I think there was a comparison with other popular cryptos but can't remember, it was a longer time ago.
But I know that syncing from scratch takes very long even if you have a fast computer with blockchain on SSD drive. I know there is the bootstrap file to be downloaded separately, but that is also capped to 3 MB/s download (you can speed it up by using a download manager with segmented downloading, though) and importing it also takes very long and requires additional drive space, and is more laborious/advanced (however, this approach has nothing to do with the number of public nodes).