I was reading an article in Newsweek about QAnon and McConnell’s congratulating Biden on his victory:

Supporters of the QAnon conspiracy theory have unsurprisingly turned their backs on Mitch McConnell after he finally congratulated President-elect Joe Biden on his election victory.
Followers of the radical movement who believe President Donald Trump is waging a secret war against satanic pedophiles, as well as pushing baseless claims that the election was rigged, were dismayed at the Senate Majority Leader and accusing him of being a traitor. (Source)

What if Trump were simply to say, “Look, I’m not doing any such thing, and any suggestion to the contrary is simply false. If you believe this, please do some more research and take into account that I am flatly denying it. Democrats are not a cabal of Satan-worshiping pedophiles.” To begin with, they probably wouldn’t believe him. “It’s all just part of his brilliant plan to keep the pedophiles on their toes!” But at the very least Trump could say in good conscience, “I’m not encouraging this dangerous, reality-denying conspiracy theory.”

The problem is, Trump doesn’t do anything in good conscience. Trump does what’s best for Trump, pure and simple, and to push back on the QAon folks would be almost certain to lose some voters (except for the ones who’ll believe it despite his insistence to the contrary.