I like the long movie format, lots of good shows to watch. Movies feel too short to properly tell a story. It's just like a few highlights hastily shown and then it's over.
In a show like Stranger Things, almost none of the episodes are individually memorable or watchable on their own. They depend too much on the surrounding episodes.
Compare to e.g. Strange New Worlds, which tells large stories over the course of a season, but each episode is also a self-contained story. Which in turn allows for more variety and an overall richer experience, since you can have individual episodes experiment with wacky deviations from the norm of the show. Not all of those experiments will land for everybody (musical episodes tend to be quite divisive, for example), but there is a density to the experience that a lot of modern TV lacks.
Still, sometimes it feels like the writers weren't granted enough time to write a shorter script. Brevity isn't exactly incentivized by the business model.