Judging by the range of opinion just on this thread, I suspect that consensus is still far off, let alone it being close to 'settled science'.
OTOH, I, a known Denier, may just be blowing cold air.
There is nothing settled in the dates they claim a so called migration took place. IT is a wild guess at best. Where they get the notion that all things began in Africa is another unsettled guess. And there is no evidence that all peoples around this globe came from either a hot primordial steamy pot of pond scum, or just two newly formed human beings.