JRT was a professor. He knew mythology inside out and felt that the English people had been robbed of their early myths and legends by the invading / conquering Normans and wanted to give the Brits back some sort of mythos. OTOH, Wagner took his material from the German Medeavil " DIE NIBELUNGENLIED " ( yes, I've read it ), which in turn, heavily relies on even earlier Tutonic myths and legends.
BTW, I LIKE Wagner's music, the Ring Cycle ( which I've seen many times ) and still like Beetovhen. Your overblown prose and extrapilations are your own opinion . Please don't try to make them out to be anyone else's. Oh, and the LOTR movies aren't THE cultural highlight, or whatever else you imagine, of the last decade.