Ancient individuals give you something a modern frequency map can’t: real, dated, published people who carried your maternal line, tied to specific archaeological sites. It turns your haplogroup from an abstract label into a concrete thread through prehistory — where your lineage actually was, and when.
Why do you match me to ancient people instead of showing where my haplogroup lives today?
Why real, dated, published ancient people tell you more about your maternal line than a modern frequency map.