The problem certainly isn't that Carrey does a bad job in the spoofs, and he actually pulls off a pretty good McConaughey impression. They start out as pretty direct mimicry and slowly evolve into the absurd, including cracks at McConaughey's acting career and the way he rubs his thumb and finger together. Carrey certainly raises at least a chuckle at times, though.
However, the comedian's engaging performance can't take away from the fact that SNL has arriving to this mocking party pretty late in the game. The jokes just don't feel fresh anymore, so hopefully these ads put the final nails in the coffin for the riffs – at least until the next batch of Lincoln ads arrive.