Otherwise, maybe the broader thing you’re talking about is the mono culture. The mono culture was gone long before Reddit shit the bed. There were no more tv shows that everyone watched then talked about around the water cooler.
….huh?
In 2023 we had (the end of) Succession, Last of Us, Beef, and Fargo — and these are just the more dramatic ones, not even touching reality series. These are insanely popular and definitely fit the “water cooler talk” threshold.