You can't change boxing history. History sees Ali as the best heavyweight in boxing history. And Ali had 3 and a half years taken from his prime. For every 1 criticism of Ali in or out of the ring, you can come up with 10 positives as well.
Who's boxing history? Yours and people who agree with you? Joe Louis had speed, skills and as much power as any heavy weight in modern boxing. Those are facts! Marciano was was one of the best heavy weights ever. That is a fact. You could not hurt him and his power and work rate were unreal. Ali was a great fighter and even a better marketeer. But he had nothing on Louis prime for prime. Frazier knows boxing better than you or anybody you will ever meet. Marciano also might have known a thing or two about boxing and he said Louis was the best ever. But that don't matter because you will continue believing what you want to believe anyhow. You surely know more than a couple of the top 5 heavy weights in the last 100 years.