So any ideas how to rid ourselves of all these incompetent leaders in government?

Maybe we ought to explore "technocracy" instead of "representative democracy".
Decision makers in government would then need to be technically skilled to be able to take a position, not just be able to win popular votes and get elected like it is now.

For example, someone like Brad Hazzard would never have gotten the Minister of Health job if we were a technocracy. The guy was a solicitor, doesn't make sense to let him make decisions pertaining to healthcare. Instead, an elected Pollie with a background in healthcare, like a doctor, would get the job.

Although, I have no idea how a PM would be chosen using that kind of system.