After a decade of airing, it takes a very special combination of acting, writing and comedic timing to keep a sitcom going. For most of these shows, there seems to be a specific season you can point to where the quality went on a downward trend. Somehow, It’s Always Sunny in Philadelphia has avoided that.
That isn’t to say the more recent seasons are better (they clearly aren’t), but the acting from each main cast member has improved and the boundaries of acceptable comedy have continuously been pushed. You’ll never be able to accuse It’s Always Sunny of dumbing down to the current political climate. Still, the show has remained humorous despite some missteps and is routinely enjoyable for its dark inversion of standard sitcom tropes.
With season 13, though, the show teeters back and forth between feeling tired and being outrageously bold.
Source: Destructoid Review: It’s Always Sunny in Philadelphia – Season 13