Linux is big enough for Ubuntu and all of the rest. It is about choice and
freedom, after all. As for the change for change sake, somebody has to push the
envelope. It might as well be Ubuntu, because somebody is going to do it.
You just have to pay attention and find out which versions are long term
support ones and stick with them. Ubuntu has stable LTS versions along with the
latest ones. Hardy will be an LTS version and Gutsy wasn't and neither will be
8.10. If you choose to upgrade every six months you cannot blame Ubuntu foryour
decision. They make upgrading possible, but do not mandate it.
For people who crave new things and lots of choice, Ubuntu is great. But it is
also for people who want stability. These people should still be running Feisty.
Instead of condemning it would be better to learn how the distro does things. It
can be both bleeding edge and stable and everything in between.
However, it is not for everybody and fortunately there are plenty of other
distros to fill in the gaps.