Let's be honest here. For a show like Stranger Things that has a budget of 30M $ per episode, being ok literally is not enough. When I watched the first season in 2016 it was one of the most interesting storyline I've ever watched. Season 2 was ok, I guess? Season 3... was just... cringe and disaster and all. When it comes to Season 4... It was definitely better than season 3, everything is better than season 3. It was also better than season 2 I think. But I never feel the tension and curiousity I felt when I watched first season... except for the last episode. The last episode was actually so eye-opening and answered so many questions. It was just what this show needed. I still feel like if they keep stretching the story after this season, it will be a disaster again. But it depends right now. We'll see.