No, they're just being as silly as we were during the '50s and '60s. (And the 1850s and the 1860s and the 1920s and the 1340s and....)

The folks who we know as The First Americans or Amerindians or Paleolithic Indians or whatever else you want to call them are descendants of the Picts and the Chufles. DNA typing has proven that beyond a shadow of a doubt. In fact, when an Anasazi was asked about it he replied, "Hoot mon, mon, aye, our ancestral tales tell of our land setting sail from our native home where we painted ourselves blue and rode giant chickens into battle. Same thing for the White Mountain Apaches and the Blackfoot and the Potawatomies and the Seneca and the Powhatans and the Objibway and the Bloods and the Sioux and all the us. In fact, we've approached the World Court and are suing to regain our native land. Brits out! Scotland Forever! Sound the piobrach!"

Traditional songs of the American Indian reflect their lost heritage. Songs like "Pict up your troubles in your old kit bag" and "On the Pictish side of the street" and "They're moving father's barrow to build a sewer" and "Scotland the Brave."

Still more evidence: at the bottom of this thread right now are ads for "Native American Genealogy" and "Visit your Scottish Roots." And if Google says it, it must be true.