Madara was pretty easily the most conceded character in the entire show (no debate there rly, it’s kind of the point) and the things he did are probably worse than what Danzo did, especially if you count what Obito did under his orders (I personally count those actions as Obito’s own responsibility, but I still think Madara was probably worse by actions).
Even so, the reason Madara is beloved rather than hated is because he owned up to everything he did. He didn’t perform his actions under the false guise of protecting a village or anything. He flat out said “This world sucks and I’m gonna make it perfect by putting everyone in a tree coma forever”. Little did he know that by doing that, he almost turned the entire world population into plant food for Kaguya to take back all of her chakra through or whatever. Pride comes before the fall, as they say. Still, because these are fictional characters in a fictional world, people don’t actually judge likability by actions, but by motives and methodology. That’s why Madara is seen as more justified than Danzo.
