The haplogroup and markers aren’t mentioned and the study isn’t avaiable. Mentions of BC coastal territoriality and the North are generally indicative of the well known migration from China and these markers discount the claim to ‘ancient ancestors’ as those markers are absent in North American founding Aboriginals as in the original migration from Africa. Founding Aboriginal markers go back to, now, probably 35,000+ years as new studies and discoveries, like indigenous North American founder ancestors on the California coast and comparative animal discoveries – the 75,000 yr old North American horse.
Genetics really can’t lie, especially about migration and colonization. The founding genetics of indigenous people rely on it. One problem no one’s solved is the original migration out of Africa can’t, yet, account for how Canadian Aboriginals came to be indigenous before all the recent migrations.