Sometimes movies whose core message I agree with bother me more than ones whose message I disagree with. I hate it when movies make really terrible arguments for something I agree with.
I think all of Michael Moore's films fall into this category. He's on the same side as me, but he's making these really awful, really manipulative arguments and keeps putting himself on camera making his own ego a bigger focus than the topic he's trying to address.
He's made a lot of awful movies and succeeded in turning more people against my side than toward it. And he's made himself the fat, smug, obnoxious stereotype straw man for every anti-corporate political cause there is.