“Love you Stephen,” Severance actor Adam Scott wrote in the comments of Colbert’s Instagram clip. “This is absolute bullshit, and I for one am looking forward to the next 10 months of shows.” Jon Batiste, the show’s former bandleader, called Colbert “The greatest to ever do it,” via Instagram comments.

Jimmy Kimmel’s reaction to the cancellation of The Late Show With Stephen Colbert is not a surprise—because the rival late-night hosts have been friends for years. After Colbert announced the stunning news that CBS is axing his long-running talk show ...