I think while Tyler is gone, we've basically entered an intermission in the drama. If you want to play into his Breaking Bad shit, we finished Season 5A, waiting for 5B and the Big Finale he keeps talking about. And I think the biggest lesson people should take away from Tyler's downfall is simple. Don't live your life pretending to be someone you aren't.
Tyler was just a young adult in college with some creative talent, but some big issues with depression and lack of maturity. But instead of developing himself into the person he wanted to be IRL, he retreated into the persona of Mumkey Jones, the absurdist, outspoken character that he could use to vent his mind behind a veil of irony. He grew successful for his caricature persona, he became famous, he got a girlfriend, but it was all as Mumkey Jones the cartoon, not as Tyler.
He never tried self Improvement, because he thought he could become the mask of Mumkey. When he started appearing without the physical mask, but still acted like the character, I think he was trying to merge the two parts of himself into one. Take the confidence and clout of his character and merge it with his inner self. But you can't do that. It just doesn't work, because you'll always see yourself as a liar.
He lashed out, he cheated, he pushed everyone away. He did it all to himself. And I can't claim to know exactly what Tyler is thinking, but my best guess is he's rationalizing it to himself with thoughts like, "I'm burning down the Mumkey Jones persona, not my real life. None of this matters, because from now on, Tyler is in charge. None of the people reaching out to me want to help me, they want to save Mumkey Jones." And he's blinded himself to the fact that this isn't about that anymore.
He ruined his life because he ended up thinking it was never his life to begin with. I'm decently confident the big brain power dynamic bullshit he keeps talking about is a byproduct of a high he feels after burning down the persona. But give it time. A week, two weeks, maybe more. But eventually hes going to realize that he ruined everything he had going, and once that hits, the Big Oof is inevitable.
None of this would have happened if he had been sincere. If he had made a clear distinction between Mumkey and Tyler, instead of trying to be Mumkey full time, I bet you he would've never "broke bad." So take that as another lesson to learn from his example. Living a lie will only lead to a breakdown. Work on yourself instead of retreating into a mask.