I'd love to believe this, but I think Allan Lichtman is kind of a crank. His 13 keys aren't bad indicators, but that's all they are. The idea that Biden should have stayed in the race, that makes sense according to the keys, but that's because the keys don't acknowledge things like most people thinking Biden's brain is soup. The keys are also just a math equation, if you have 6 you get reelected. They ignore the fact that certain areas matter more than others. If the economy is good, but people think Biden can't physically do another four years, the economy being good doesn't matter.
So yeah, don't trust Lichtman, we're still the underdogs here.