A Sane World

In A Dubious Vote-Fraud Claim Gets the Trump Seal of Approval, the NYT, yet again, debunks a Trump claim and demonstrates that the source of the claim lacks any credibility whatsoever.
But in a sane world, should not the burden of proof shift?

source: nasa.gov

At this point, should not every statement of Donald J. Trump, President of the U.S., be presumed false, unless he produces irrefutable evidence to the contrary? In fact, his statements should have been presumed false early in the election campaign, based on the history.
The benefit of the doubt lapsed long ago, believe me. Bigly.