Article continues below advertisementStephen Colbert's final months on The Late Show were always going to draw attention. But as the CBS host counts down to the show's May 21 end date, his farewell has evolved into something larger than a typical late-night sendoff.What might have been a routine final season has instead become a cultural and political storyline, with each episode scrutinized through the lens of Colbert's relationship with his network, the changing leadership at Paramount, and the comedian's reputation as one of television's most outspoken political satirists.