Several excellent resources - and Joshua’s, in particular, good confirmatory evidence for the optimistic assumptions of Rohde’s work and, hence, the Genealogical Adam hypothesis.
My hesitations about population genetics are hesitations about any system of modelling, especially one in which there are so many simplifying assumptions which, when dealing with lost events in the distant past, cannot in principle be validated. That, to my mind, makes any projection into the distant past a question of “what ought to have happened, given the model” - an intrinsically weak case - how does one know that factors not visible in the short term may not skew the conclusions? And how does one even confirm what did happen? Even weaker, of course, is the argument “X cannot have happened, because of the model.” As the Venema-Bugg exchange shows, such confidence is all too easily confounded, even from within the model. In other words, it’s all about recognising the limitations of ones models, rather than assuming that “science has spoken the final word”.
The admixture history business still makes assumptions, of course, but pretty basic ones: here is an allele, there is an allele - there must be a genealogical link. It’s probably easier to see the limitations of its predictive power.
Revealed_Cosmology: I always wave a flag for Ussher and his dating, partly because I believe he was related through marriage to a distant ancestor of mine (after Adam, I mean). He’s often represented as an example of blind faith in tradition, whereas at the time he was modelling the very best science and was, in fact, a great intellectual influence on his family friend Robert Boyle. His problem was putting too much faith in the assumptions of his model, ie that biblical chronology was sequential and precise, and that the genealogies were complete. Plus, of course, that “man” in Gen 1 was “Adam” of ch2.
Given those methodological errors, it’s remarkable how closely his dates match “likely” dates for people and events from modern archaeology and so on, eg the date of the Exodus, of the Patriarchs, of the Flood (if equated to the great Shuruppak flood) and of Adam’s cultural setting, conveniently close to the known origin of written records in Mesopotamia.