Russia was literally the driver of far-right extremism before the fall of the Soviet Union, and Russia has continued to be the driver of far-right extremism since the end of the Cold War. That is a simple geo-political fact that is accepted by EVERY authentic political entity and news media on the planet.
Anybody saying that Russia has NOT been the leader in promoting Western Far-Right Extremism is spewing Russian propaganda. They are either a Russian propagandist, a treasonous MAGA, or a stupid, gullible pawn, or any combination of the three.