Dear Maxq: " if someone sincerely believes that something
is bunk, and presents evidence (factually valid or otherwise) in support of that belief, that
person can claim to have debunked it, regardless of whether that sincerely held belief is
factually correct or not."

Dear Maxq: no matter how deeply "someone" believes something is "bunk" that does not make it "bunk"
And as plutarch said (I thinK) you can never "debunk" what is not "bunk".