It says "autosomal" in the first sentence. What makes you think the mutation process is relevant to this subject? He's talking about ancestry of genomic segmen

It says "autosomal" in the first sentence. What makes you think the mutation process is relevant to this subject? He's talking about ancestry of genomic segments. It doesn't matter what mutations occur on those ancestral lineages. If you don't understand the topic, I'm baffled as to why you would post two sentences criticizing it.