>A what point?

https://www.merriam-webster.com/dictionary/intrinsic

>Do you have a reason to think that means PCA is bad at representing similarity and kinship because of this?

I suggest you read up on the definition of "distance" and "similarity" before drinking the PCA kool-aid. You don't get to define an ad hoc distance just because it fits your ideas about ethnicity. But then, I only have the popgen community to back me up on this. What do you have?

>As for the Slate Star Codex source - that wasn't to prove anything, just to define the "weak man" term.

SSC, providing ammunition to online HBD proponents since 2013.