Since the term “Nordic” doesn’t appear either in the excerpt or in the full article, what you’re engaged in there is a classic straw man argument.
A quick review of the literature regarding both sites ~ including the maps ~ and a reference to the Bronze Age as it's identified in Scandinavia, pins this piece down to the Nordic Thesis ~ which has been modified substantially since the advent of DNA testing of extant populations and mummified remains.
So, no straw man here ~ maybe some Taiga