Link: https://collider.com/its-always-sunny-in-philadelphia-season-18-review/

It's Always Sunny has already proven it can adapt while remaining true to the show's DNA, yet Season 18 proves that it can be hard to keep a good thing going. As the longest-running live-action comedy series, it runs the risk of becoming repetitive, coasting on the goodwill of audiences. Rather than building on previous momentum, the show's return is a step back, delivering a season that, while still hilarious, hits many familiar beats.

Longtime fans of the series will find it comforting to meet up with the Gang year after year for a new scheme in Paddy's Pub, so the familiarity of Season 18 isn't necessarily a turn-off. Rather, it stands as a tribute to how far the characters have come even while some things still remain the same.