But take Unity as a "case in point." Unity is such a radical departure from just about every other window manager on the planet that Shuttleworth is now saying that "we need to rip out the entire Xwindows infrastructure and replace it with something else." Can you think of any other Linux distro that does that?
And there's numerous examples of that in Ubuntu: changes that were made against the grain of what has traditionally been "the *NIX way".
The other mainstream distros try real hard to keep Linux.. well, Linux. The heart and soul of Linux is The UNIX Way, like it or not. Some of us happen to like it. And for Shuttleworth to handwave that away when his company was built on the blood, sweat, and tears of the thousands of volunteer contributors that make Linux what it is strikes me as very wrong.
Even Google wasn't as insensitive with Android. Google outright says "we're not trying to replace Linux, or make Linux change what they're doing for us. We like Linux for what it is: many of us use Linux every day, and Linux drives our company's servers from top to bottom. The Linux kernel is a powerful tool; and Android is built on that tool. But please, carry on!"
Shuttleworth's built an awful lot of goodwill from the Open Source community, and to basically tell us "if you don't like it, lump it" is highly insensitive at best, and sociopathic at worst.