“the science behind these studies appears sound, entirely dependent upon the power of the processors performing the number crunching”
Seems to me the major basis of conclusions about a long time ago would be the raw data itself, not the crunching of it.
I was referring to the technology. They couldn’t perform such genome calculations 20 or even 10 years ago.
It’s modern processors which have opened the door to such studies and the ‘raw data’ is the genome itself.