The MAGA lies aren't meant to be believed. They are meant to "own the libs." The entire right wing of American politics has devolved into one thing, "own the libs." If telling hurtful lies about North Carolina's worst catastrophe in decades is what it takes to "own the libs," then no lies is too outrageous. If electing a fool who had Vladamir Putin's up his rectum is what it takes to "own the libs," then MAGA Nation is going to start singing "The Internationale." The right wing finally dumbed down their message enough that the embittered, uneducated, technology displaced masses finally get it, "own the libs."
+1. The heart of MAGA Nation is resentment of others, pure and simple. It can be resentment of the nation's growing racial and religious and ethnic diversity, or it can be the traditional resentment of rural, small-town white folk towards urban residents, the class resentment of lower and working-class whites towards (usually) better-paid white-collar and professional class workers, etc. And Trump is a master at playing up their resentment and focusing it on specific targets - immigrants, college professors and students, NFL players who kneel at the national anthem, etc.
To cite one small example, just look at all the bitterness and anger that was expressed when IC announced that they were shutting down the IC politics board. It was quickly overrun by Trumper posters - some who had been banned and some who had never posted there but clearly had regularly read the posts and threads - expressing how gleeful they were that liberals would now not be able to post their views on IC anymore, resentment that a majority of the board were liberals and they didn't feel welcome there, and just years of pent-up resentment flowing from them like a river of rage. And shutting down the IC politics board was seen as yet another conservative "own the libs" victory, so they claimed they were happy even while their anger clearly showed in their posts.
If your hometown is dying because the factories are gone, if your kids leave town as soon as they get out of high school and never come back but instead move to blue-voting large cities, if fewer and fewer people seem to be going to church regularly and people you once regarded as freaks, like gays and lesbians and transgenders, can now marry and be publicly accepted, and if racial minorities like the Obamas can now get better jobs than you and aren't at the bottom of the social totem pole anymore, and if women can now be independent and have their own careers and aren't forced into marriages with guys who are basically losers, then voting for Donald Trump and similar candidates is a great way to express your resentment and own the libs. I still see people who post on facebook or other social media the video clips of Hillary supporters crying the morning after the 2016 election, and it still makes them so, so happy. Trump is the instrument of their revenge, and if he wins again they can gloat on social media and make the libs cry. It's what they're all about now.