Not everyone agrees with every fact-check, even for objectively verifiable facts (which is the minority of all things claimed). Even Mythbusters have done thing

Not everyone agrees with every fact-check, even for objectively verifiable facts (which is the minority of all things claimed). Even Mythbusters have done things where I think they clearly reached the wrong conclusion. Having large consequences attached to the result of a fact check sounds like a recipe to alienate everyone. If you say something obviously untrue there are already laws against fraud and false advertisement. For anything with less burden of proof, a note below your ad that adds context seems adequate