Which isn't far from the new use, and in another (five? ten?) years it may be safe.
But right now, if someone's using the old definition, then, that factoid is being presented as plausible, but known as wrong.
(Sure, I know things people say as 'fact' should be checked out, but the starting point matters - which position are they proposing - the idea that the statement is right, or the statement that it is wrong.)
(:Smiles ruefully emoticon:) And to be sure, I'm not kvetching at you - just grinding my gears™.