Stopped reading after the first two lines.
"So what if Canonical has decided to reinvent Wayland? Apart from the weird contribution agreement (which will only limit contributions), Mir is fully free software isn't it? Who are they hurting apart from their own resources and their own users? It's not that I am applauding Canonical for their decision, but I really don't see the massive problem here." Why is Canonical not allowed to do this?"
Am I missing something? Who has ever said that Canonical isn't allowed to build their own dispaly server? The point is that they'll have to do it on their own and can't force anyone to support them. If I come up with something why should I demand other people do do my homework?
This guy obviously has no overview of the situation.