At least if you took his blogs at face value, he wasn't involved in the "mess", but the mess was forced on everyone by corporate interests.
And I believe this to be true. Peter was a brilliant and wonderful human being whom I shared a tremendous amount in common and largely the same viewpoint on life with. There's not a week that goes by where I don't mourn his loss and where we could be today if he were still with us.
There is literally nothing in common between RabbitMQ and ZeroMQ except for the two symbols 'MQ' in the name.