That's not how inventions, D&D furries, proofs OR satan works!
Inventions are created through forethought. The furry fandom isn't an invention, it's a fad, a stylistic choice, a mental illness. No-one sat down and said "I'm going to design and create a sexual attraction to upright standing animals".
I don't think you can call D&D furry without giving some evidence that D&D pushes as many people as they can people into fucking said upright standing animals or wearing animal costumes.
Proof is not just "something predated something else, therefore this means something entirely unconnected is true"! A proof demonstrates each step of your logic! Formal logic is something that can allow you to show how you get from the first fact to the last fact!
Satanism is a different type of mental illness to furries! How are you linking it via D&D?