And cause of that these distros/DEs existed before Mir, Unity and even Ubuntu...The only reason it works with any distro/DE is because those distros and DEs are maintained by assholes who try to sabotage Canonical.
How do you come to that conclusion? What OS beside Ubuntu did we see from Canonical?I also trust they know a bit more about OSes
Till now all reasons they gave have been proven to be invalid. So where are these "very good reasons" ?and have a very good reason why they created Mir
Then do your self a flavor and shut up. You still didn't take your pills, did you?I don't know
//EDIT: BTW, from your link:
Remember: They didn't plan the API as good as Wayland did but rushed it instead... And the the same guy told he thinks Wayland is re-creating the issues of X... *facepalm*"the API for the Mir Client library will always be backwards compatible"