Depends how you define "success". If you assess it based on the long-term consequences of the policies he pursued, then definitely not.
Since we judge other Presidents by the long-term consequences, it would be fair to do so with Clinton.
No.
Creating a budget surplus during an economic boom is not that laudable. The evisceration of the welfare state is the Clinton legacy.
Clinton's presidency should not be celebrated by Democrats.
Its Keynesianism 101?
I think he means that it's not a particularly grand accomplishment and could be achieved by any half-competent President.