I have read the following reply from Martin Pitt on the ubuntu-devel-discuss which makes me believe this was an accounted risked, part of the preparation for a much important goal which is 10.04 LTS:
" Well, the bug tracker is full of regression and other reports. KarmicUnlike the usual blame game this was a much simpler and probably more realistic answer.
indeed was meant from the start as a "crack dump" release, with lots
and lots of new technology going into it. So in a way, it was the
Fedora of Ubuntu releases so far.
Perhaps we should have announced that more clearly...
At least we now have a full cycle ahead of us to do bug fixing. :) "
Instead of wasting energy debating if it really failed let's just try to fix it. Sometimes is not a technically failure and it is just lack of understanding on how things work, if that is the case we still need to fix it, it's a matter of improving awareness and communication.