Being delusional and a megalomaniac are different than suffering from dementia.
Not when someone is conveniently "forgetting" the 60+ lawsuits that were tossed, the recounts that produced basically the same results, the biased ninjas in charge of tallying up the votes again, the GOP election officials that certified the counts, the GOP AG, VP, and conservative leaning SC, that all rejected the little fantasy of it being stolen.