It's amazing... You have this guy who throws out good points and gives proof that what he's saying is true,
He smears Bitcoin with lies, and major exaggerations. Provides no proof, not that it is needed for me because it contradicts my real life experience. He also smears another major developer with a misleading half truth (i.e. lie).
Its hard to be sympathetic to somebody who does not show that curtsey to others.
We should be bigger people. Mike, like Greg did make many contributions and should be thanked for them.
I think Mike needs to look critically at himself and learn from his mistakes. I think his ego is actually fragile and he was hurt that fellow developers and peers rejected many of his ideas. He took that personally as a rejection of himself and harboured resentment to his colleagues.
That resentment showed up in his actions, communications and failure to be a team player. He could not accept people disagreeing with him so circumvented development process by trying to rally public opinion to his cause to 'prove himself right' and save his ago. When that did not work he rejected bitcoin and in a case of sour grapes declares it as a failure, and will probably resent its success as it shows his own failure and hurts his ego.
His posts were often hyperbolic and indirectly or directly attacked the core development team. He was probably the biggest cause of the toxic atmosphere we have in Bitcoin now.
His followers started going even more extreme then him with ridiculous venom towards block-stream and core devs. Theymos moderation policies then polarised the community further and gave the big blockers a feeling of victimhood that made them yet more extreme.
Thats my take.