There's a conspiracy theory that Biden wasn't competent enough to sign stuff, at least for some period at the end of his term, with the implication being that none of those presidential acts are valid. Anybody who believes this is mired in an impenetrable misinformation bubble and should be dismissed out of hand.
There’s a conspiracy theory that Biden was secretly competent at the end of his presidency despite public appearances otherwise.
Hey I'm not disagreeing that he was in cognitive decline, but the idea that all executive action should be nullified because of that is crank shit.