Your confident claim here piqued my curiosity. It seems there's at least some amount of controversy about it. At least in finland it has been suggested that the sami may have been pushed north by colonization around the 14th century.
In any case your statement clearly doesn't hold for the northern part of sweden.
"Some amount of controversy" means that your confident portrayal is a form of intellectual dishonesty. Not everyone would agree with your statement as written.
"Some amount of controversy" about the earth being flat means that your confident portrayal of a round earth is a form of intellectual dishonesty. Not everyone would agree with your statement as written.