A bottleneck of two, or a first pair at our origin older than 500,000 years, is possible.
I am intrigued, but to be honest, I don’t quite know what to make of it just yet, and don’t want to jump to any conclusions.
I don’t think the study can claim all the things it does based on the evidence they have.
The reason all these new discoveries are so noteworthy is not because they represent the usual progress of science.
Philosophical questions like who we are and where we came from are surely worth considering. But nothing in these documents will bring students closer to being able to do so in an informed manner.