Yeah, I actually think DA only said that like one time in reference to Andy Dalton when Dalton had just thrown 3 Interceptions in the first half of a game, but the fans picked up on it and the fans were the ones that kept repeating it.
So, it's more that DA actually kept doing what he was doing that was the problem more than him saying keep doing what you're doing.
Although, to be fair, DA was very fond of saying keep chopping wood, but again, not as fond as the fans were of saying it.