YES!
This is what the simplification graph posted above clearly shows, we really messed up. Compared with Greece when brown came to number 11 he had the country in a much better state than Greece has been in.
As such we can see that his performance was the worst out of the group, he didn't drop the ball, he threw it hard in the wrong direction.The problem is the worst might not be over, we don't know, and we can't know for sure.
What we can see is the big pile of debt we've got which will be around for decades to come, as a direct result of tax and spend spend spend. So do we do nothing about that and just hope that everything works out OK?
Remember that your sentiment of superiority over the majority of people, and how clueless they are might well be thought of you as you deride anyone who doesn't align themselves with you, whilst you show shocking ignorance of the most simple indicators.