It's possible gmaxwell has had enough abuse. Apparently he gave up commit access to the bitcoin github. I saw his last post was in this thread a few days ago.

I've found the abuse the Core devs and BlockStream to terrible. I wouldn't blame any of them for choosing to walk away. On certain (unimportant) forums there's some celebration of the idea that gmaxwell may be walking away. Reading it, I have to say that I would walk away from a community with so many evil people. Frankly, I don't want to be in a "community" with people like that either. If there were a way to boot all of them out and keep gmaxwell, I'd prefer that. If they'd just fork off and leave the rest of us with Bitcoin, things would probably be fine (after a shaking out period). Instead they seem intent on "occupying" Bitcoin.

I'm sure gmaxwell knows he has a lot of supporters in the Bitcoin community. That wouldn't change if he decided to leave. I think most people would understand.