They've waked up to a problem involving "human evolution" which they were unaware of prior to now. In order to be descended from something via any process involving evolution, at some point, you have to be able to interbreed with the something and, again, there was always a big mystery about the total lack of evidence of crossbreeding until the DNA studies which started in the late 90s. James Shreeve's "Neanderthal Peace" article in Discover in 95 described the problem in quite a lot of detail.
They're trying to save evolution by manufacturing evidence.