And if you can show me a single personal attack from Shuttleworth here, I'd be very interested. I don't always agree with him but in my experience he's always been extremely professional. Claiming anything else is incredibly unfair and mean-spirited.
For the lazy, every comment on the linked bug by him (with an aside that 9 comments on this bug hardly seems to be ignoring the complaint):
https://bugs.launchpad.net/unity/+bug/882274/comments/9
https://bugs.launchpad.net/unity/+bug/882274/comments/19
https://bugs.launchpad.net/unity/+bug/882274/comments/20
https://bugs.launchpad.net/unity/+bug/882274/comments/25
https://bugs.launchpad.net/unity/+bug/882274/comments/26
https://bugs.launchpad.net/unity/+bug/882274/comments/27
https://bugs.launchpad.net/unity/+bug/882274/comments/29
The problem is Shuttlworth can't keep his mouth shut. Personal attacks only make the situation worse. He should take a page from Apple here - "keep your mouth shut" - and produce.