People get things done - Wayland. Comes along Canonical and creates their own stuff just because Wayland is not controlled by them. Must be so fun to fragment Linux even more.
To be fair, they give other reasons for dropping Wayland. You might not believe them, but you're hardly giving them much of an argument.
Their reasons don't sound convincing, and Wayland developers refuted them also pointing out that Canonical didn't even engage in any dialog with them whatsoever. They just created their own thing silently in secret. Such kind of approach doesn't add to credibility of their reasoning.