It's weird. The "records" in question appear to be those kept by the Smithsonian:

> The Smithsonian Institution’s Global Volcanism Program has no record of any eruptions of Hayli Gubbi during the Holocene, the current geological epoch, which began at the end of the last ice age, about 11,700 years ago.

But I'm fairly confident that the Smithsonian's records don't go back more than 700 years.