I think the consensus is that he was a good guy consumed by demons. My uncle was bipolar, eventually committed suicide. When he was happy, he was the lie of the party. When he was manic, he was scary. When properly medicated, he was a good, interesting dude. When he self-medicated, it was a crapshoot.
The two reunion shows I attended were good. It was a double whammy that he was using/drinking and getting older, so Scott didn't sound like he did in the No. 4 and most of SLDD era.
I think Scott was tired of being a scapegoat when others had problems, too. Like all the VR guys except Kushner relapsing, but only his being news or a problem. That said, being the singer is like being the President or a famous coach--you get all the credit, but the flip side is you also get all the blame. It isn't fair, but he knew that.
But it seems his trajectory was set after his brother died and nothing was going to change that. Ultimately, that's on him. But I am glad we got what we got from him.