But they didn't. There is a lot of stuff wrong - from my perspective - in the Arab world, and nobody with actual power from the Arab world seems to actually want to do much about it. So we end with these half-hearted revolutions which are more regime changes than actual fundamental changes and if they are fundamental changes they tend to be for the worse rather than for the better. It's a real pity.
As for the Iraq war, Saddam and his sons - and all those supporting the regime - were complete assholes. And I would have supported regime change per-se for that reason alone, but that wasn't what was sold. Because if we did support regime change for those reasons then there would be a long waiting list of other regimes that would deserve to be 'fixed' long before we'd get to Saddam (in spite of all the crimes they were engaged in the world is full of such trash, they were not the exception, in spite of the media spotlight being very much on Iraq).