And these days many Russian ultra-patriots are proudly accepting the representation of Russia as Mordor and its soldiers as orcs in the war in Ukraine.
The outlined reasons are cartoonishly communist, but "The Last Ringbearer"'s worldview is not communist. It is more like "the West are liars". And yes, this does resonate in Russia.
See from example https://en.wikipedia.org/wiki/The_Last_Ringbearer as perhaps the most famous from the genre