Psychological aspects of the issue aside, consider that Trump supplied the 215lbs info to the states of Georgia and Florida for inclusion in government documents. I can't speak for Florida as its legal code is something of a morass and only seems to criminalize false information willfully furnished in business contracts. Georgia, on the other hand, is very specific that willfully furnished false information on a government document is a felony. Seems to me that a man who would knowingly commit a felony to maintain his public image and/or ego can't be trusted to do the right thing if it means admitting a mistake.
E.G.: if we look back to his actions during the pandemic, right off the bat, he went out on a limb and started making stupid claims concerning virulence, duration of a novel virus when no-one could possibly know anything about how quickly it would spread, mortality rates rather than operating on a rational, grounded-in-reality approach of "this is a new thing, we don't know much about it so take proven-effective preventive measures". As the pandemic progressed and his initial claims were shown to be erroneous, the U.S. death toll spiked into the tens of thousands, he doubled down on what was obviously, demonstrably ignorant bullshit (image/ego-protective), began spreading mis/disinformation from the bully pulpit of the Oval Office.
Caption this Meme 