At one time it would have sounded like a conspiracy theory, but you don’t get here without a massive disinformation campaign.
Trump’s supporters have been so programmed to accept everything he says at face value or, in some cases, just to ignore what he actually said in favor of the party’s updated spin. In all cases, they believe it is impossible that he could do any wrong, so any semblance of incongruity or poor leadership or any negative aspect of Trump at all must be due to lies of his opponents – even if that means the entire system would have to be rigged against him to an extremely unlikely degree.
The last time the world saw these tactics used to such an extreme extent and with such success required a widespread campaign of so-called “denazification” after a very prolonged war.