The "studies" showing one, just one, ancient mama, were spun to the conclusion which miraculously matches the assumptions. The obnoxious a-hole (now deceased, and good riddance) who pushed the crap spewed a steady stream of stupid, hateful things (kinda like I just did) regarding early human varieties he didn't like (IOW, he was a bigot) as well as those in professional specialties he disagreed with. He wasn't a scientist, regardless of the dots and letters after his name, and instead belongs in the same category as Lysenko.
He didn't invent Replacement, he just agreed with it, which isn't surprising, since it is nothing but a master race theory, and he was a bigot.
that certainly answers my question :)