I don't care what technologies Mark or the Ubuntu project chooses to use or promote. Their projects, their time, their rules. No one else has any obligation to adopt any of it, or tailor their work to fit with Ubuntu's goals or needs.
I've read the Wayland versus Mir threads, the GNOME3 versus Unity threads, the systemd versus upstart threads, the Ubuntu versus Debian threads. Canonical's rough MO appears to be:
1. Look a project over, participate a bit
2. Integrate it into Ubuntu, sometimes poorly
3. Decide that changes are needed to fix apparent issues, write some (questionable) patches or discuss needs with project
4. Throw a minor fit when project rejects proposed changes (Mark blog post time)
5. Run off and reimplement project in the Ubuntu ecosystem with all kinds of Ubuntu-specific code.
6. Preach about how the community isn't grateful enough and that people are attacking for no reason. (Time for a passive-aggressive Jono Bacon post)
7. Ignore the rest of the ecosystem as it evolves and standardizes on non-Canonical community-built projects (Wayland, systemd)
8. Act shocked that open source communities don't take them too seriously. Ignore valid technical criticism.
Ubuntu owes its success to the communities that actually built 90% of their stack. They show their gratitude by going their own way technologically and expecting everyone to follow their lead. Instead of making GNOME3 rock after riding the GNOME desktop to massive mindshare, they went off and did Unity. Instead of seeing the writing on the wall on the init system front and diving in to Systemd they are sticking to Upstart, because NIH and differentiation. Compromise with the people that they owe their success to? Contribute to the projects that made them the popular distro they are today? Consider the desires and goals of non-Ubuntu developers? Nah, we're Ubuntu, we're visionary thought leaders who secretly idolize Steve Jobs, we don't do that except when we need something.
Ubuntu is standing on the shoulders of giants, but they've given the giants non-standard shoulderpads so that they don't have to touch icky, icky giant shoulders.
They're is like a child who expects Mom and Dad to follow his newly-made-up rules. "All future dinners will be pizza, Mom and Dad! As the most popular kid in third grade, I, Markie Mark, declare this to be our Standard Evening Meal!" Later, on blog: "Tea party-esque parental units are ignoring my plans for NO REASON!"