It's funny how he uses the horrible movie as proof of this. And yes, it's sad people like this effectively prevent westerners from wanting to learn about steppe cultures. Our good friend Ancalimon does something similar, only in writing.
These shots are from the movie "King Arthur", but the other speculations belong to the maker of the video. I like the movie itself even though it depicts Sarmatian culture only superficially and in fact is not concerned much with it. I think the inspiration for the movie was the book of C. Scott Littleton and Linda A. Malcor "From Scythia to Camelot".
At least one thing is correct - many of the subjects and plots in Arthurian cycle of legends have their prototypes in Scythian tradition and almost exact counterparts in the Nartian epic.
When one uses a fact/publishing out of context and then twists it up to promote his/her own propaganda the original research will be discredited. Same effect with modern usage of I.E. or even modern day Christianity as examples. Hence I worry... oh well...