The 2021 Survivor Series was a show built around non-title matches that had little storyline build-up, and the traditional matches with no interaction between brands.
It was a paradox. The show, on 11/21 at the Barclays Center in Brooklyn, was, from a television standpoint, one of the weakest builds to a PPV to date. Because the name Survivor Series is traditional and it’s supposed to be an A show, no doubt viewership was higher than most B shows. But aside from Becky Lynch and Charlotte Flair building a match based on a legit disagreement during the belt trading angle on Smackdown and their former friendship, and a minor situation where Big E vowed revenge for Roman Reigns and the Usos feuding on Smackdown with Xavier Woods and Kofi Kingston, there was little to build the matches.
On the flip side, there was more mainstream media done related to the show than just about any show other than a WrestleMania. The main characters, Lynch, Flair, Paul Heyman and Roman Reigns in particular, were visible all over the place promoting the show and the brand.