Patrice -
I think the Foulpoint thing was fairly unique. It was intended as a hoax and then, when the perpetrators knew it was being relied upon by other writers and researchers, it went uncorrected.
That hasn't happened much, unless what we know about golf architecture turns out to be some sort of Cartesian bad dream.
One myth that persists, however, is that TOC is a happy accident of nature. TOC's current iteration is very, very old (ante-Dawson, that is), but it did not just appear one day three centuries ago.
Bob