That's no Ko's problem. I respect his complete lack of respect for his predecessors. Basically, he is running down a list of what's wrong with Taipei, and he doesn't care who he pisses off in the process. That's really rare in any political culture, not to mention Taiwan's.
At the same time, as a "political newcomer" (as he likes to say), he has a lot of views and behaviors that are far too unnuanced. His off-the-cuff jokes that aren't funny only open the doors for people to criticize him and citizens to shout "Oh, how diu lian!" Maybe I'm underestimating him, though. Maybe he's such a skilled politician that he knows these little gaffes will catch the media spotlight while his actual policies are largely overshadowed.