Maher is just a contrarian kook, always has been. His criticism of Bush was convenient and not the product of a serious moral framework.
That said I’ve watched Maher for 15 years and look forward to his show coming back after the strike. I say this as someone who probably disagrees with more than half of his hot-takes.
I saw his stand up at DPAC a few months ago and loved it. He is a funny guy and very entertaining.