I watched one Yon's recent videos, I didn't detect any "white nationalism". I prefer original sources over race baiting. We should be capable of evaluating individuals and their messages on their own merit. There are many areas where I disagreed with Yon, but I didn't find any of the inflammatory content your sources suggested. To the contrary, it fits with my past experience with the SPLC's partisan crusades.
https://nypost.com/2023/07/18/smearing-conservatives-for-mon...
https://www.heritage.org/religious-liberty/commentary/anothe...
https://adflegal.org/setting-the-record-straight