All digital properties go to a clean slate when the Presidency changes hands. There's nothing odd about this. It's similar to the physical aspects of the government, such as cabinet posts, that are directly under the Presidents purview. It being factual really has no bearing on this, although given that for data it just gets archived rather than completely purged it seems to be an incredibly reasonable treatment.
The title of this post, on the other hand, is, dare I say, an alternative fact.