It’s unclear whether the series has consistently been disappointing or if something happened with Oliver himself. A program aiming to comment on contemporary politics really ought to ensure its information is correct, disregarding the obvious and extreme slant it takes. The show now functions as a propaganda tool reminiscent of Chinese communist media, representing a specific political faction (which I won't name to maintain neutrality). However, Oliver presents outright falsehoods to viewers while completely dropping any pretense of "comedy" from what’s meant to be a politically humorous program.

Source on TMDB