“Fallacy” Fallacy _ the argument that a statement is false simply because an argument for that position can be proven fallacious. (Argumentum ad Logicam)
“His economic theory seemed really promising, but the various studies supporting its validity turned out to have too many flaws, so the theory isn’t valid.”
This reasoning is fallacious because there may be another proof or argument that successfully supports the proposition. Since fallacious arguments can arrive at true conclusions, the validity of the conclusion doesn’t always render the initial premise true.
This fallacy is often combined with a “Straw Man” fallacy to counter an argument where burden of proof is not easily obtained. More information or better perspective will bring resolution to this kind of fallacy.