I hate when they say "didn't happen"
It's true there hasn't been any evidence of fraud to a degree that would change who won. It seem sensible that if there was a bunch of evidence, they'd at least hint at it in a court filing. None of that means it didn't happen though. Could just as well mean nobody got caught 🤷‍♂
But you know me... I long for a world were claims aren't valid without the logic and evidence to back them up. Imagination is entertaining, but everybody could imagine something different. Not a great way to evaluate reality

If not courts, election officials, the voter registration + logs... what do you think people would need to see to let go of that particular imaginary beast? (that beast being that the election results aren't valid). Or have they heard the same thing repeated so much now that they'll just believe it no matter what?