This is my only "proof" but I do think he is not lying

Any mods look for bad framerates and spliced runs, These are what he did:

Also in this case, maybe if some runs say "wr" w/o "old" (or something) and are timewise like 3rd - 4th place, that also could indicate fakes. :D

From what I understood The WR thing on YH10S was a Joke

http://www.speedrun.com/Super_Blue_Boy_Planet/thread/3jyxx 🤔

Reuploading those in my channel for evidence