Before I start this criticism of a particular scientific theory let me qualify my position. I firmly believe that research is both highly commendable and in most cases, necessary, but waffle is waffle, no matter how many letters there are after a name.
When I was very much younger I took an avid interest in biochemistry. The study of physics and my chosen preference, chemistry are similar in that they rely on proven facts. If one adds quantum mechanics to the pair the facts become more interesting and often, more provable.
However, in the study of human evolution only on one point can the three agree. A tenuous point at best.
There was, in scientific parlance, a RARE event that changed fish into walking animal. No branch of science can explain that RARE event.
That’s why I write fiction, I can make it up as I go along.