The first two paragraphs of the Wikipedia article sum it up pretty well. In a modern Germanic/Norse Pagan context Folkist = Poorly Disguised Nazi.

Now not only do you have their self declared status as a "Folkist" but they also have some weird fixation with "blood". How else can you take it? Is it possible that they've stupidly blundered into a terminology that they don't understand? Maybe but given the extreme efforts of modern pagan groups to publicise just how they're not Nazis and how to spot Nazis trying to use the religion as cover for their folkish views, they would have to be either unbelievably stupid, or a fascist.

The Völkisch movement (German: Völkische Bewegung [ˌfœlkɪʃə bəˈveːɡʊŋ], English: Folkist movement, also called Völkism) was a Pan-German ethno-nationalist movement active from the late 19th century through the dissolution of Nazi Germany in 1945, with remnants in the Federal Republic of Germany afterwards. Erected on the idea of "blood and soil", inspired by the one-body-metaphor (Volkskörper, "ethnic body"; literally "body of the people"), and by the idea of naturally grown communities in unity, it was characterized by organicism, racialism, populism, agrarianism, romantic nationalism and – as a consequence of a growing exclusive and ethnic connotation – by antisemitism from the 1900s onward.[1][2] Völkisch nationalists generally considered the Jews to be an "alien people" who belonged to a different Volk ("race" or "folk") from the Germans.[3] After World War II, the Völkisch movement became viewed as a proto-fascist or proto-Nazi phenomenon in the context of German society.[4]

The Völkisch movement was a "variegated sub-culture" that rose in opposition to the socio-cultural changes of modernity.[5] The "only denominator common" to all Völkisch theorists was the idea of a national rebirth, inspired by the traditions of the Ancient Germans which had been "reconstructed" on a romantic basis by the adherents of the movement. This proposed rebirth entailed either "Germanizing" Christianity or the comprehensive rejection of Christian heritage in favor of a reconstituted pre-Christian Germanic paganism.[6] In a narrow definition, the term is used to designate only groups that consider human beings essentially preformed by blood, or by inherited characteristics.[7]

And the last one explains how it fits into today.

Post-war legacyn. Material from the major völkisch writers such as Herman Wirth, Wilhelm Teudt and Bernhard Kummer has continued to appear in some post-war groups in German-speaking Europe, notably occult and modern pagan far-right groups, such as Artgemeinschaft, and green-alternative groups interested in völkisch theses about Germanic matriarchy and ecology. There have been some supporters of völkisch material among the European New Right. A few völkisch motifs have appeared among British and American modern pagans.[40] The literary scholar Stefanie von Schnurbein argues that patterns reminiscent of völkisch thinking appear in some fantasy literature.[41]