The stories that I follow from RC have been The Great Alicorn Hunt, Alicornundrum, Nyx's Family, and The Audience and the worst I ever saw it getting into political stuff was Alicornundrum and The Audience - I think he handled it pretty well, especially the stuff about lifestyle choices in The Audience.
EDIT: Oh and... well, there was also the commentary about the Cutey Marks that the CMC got, but I think a lot of other Bronies feel the same way about it. I know I do - the canonical ones feel WAY too generic, including the three being a variation on the same theme. But I did kinda draw the line with his rant about Diamond Tiara's Special Talent - granted, the producers could have done better with how they went about the episode, but being a highly effective manager is something many workplaces wish for in their supervisors.
EDIT: Oh and... well, there was also the commentary about the Cutey Marks that the CMC got, but I think a lot of other Bronies feel the same way about it. I know I do - the canonical ones feel WAY too generic, including the three being a variation on the same theme. But I did kinda draw the line with his rant about Diamond Tiara's Special Talent - granted, the producers could have done better with how they went about the episode, but being a highly effective manager is something many workplaces wish for in their supervisors.