People believe all sorts of things. Some believe Bush started the Iraq war over oil, which is nonsense. Some believe Americans conspired to fly planes into the twin towers on 9/11, which is nonsense. Some believe the coronavirus accidentally developed on its own from rogue bats in a wet market, which is nonsense. Some believe there was no conspiracy to murder Seth Greene and steal his computers, which is nonsense. Some believe an American movie-maker was responsible for the attack on Benghazi, which is nonsense. Some believe there are more than 30 former Clinton associates who died young under suspicious or mysterious circumstances, which is not nonsense. Some people believe Trump conspired with Putin to steal the election from Hillary, which is nonsense.Which of those allegations do you consider to be "credible"? QAnon? Pizzagate? False flag mass shootings? Is it 9/11 perhaps? 9/11 was done by Republicans.
And so forth.