Frankly, I can only think of shows that got worse.
- The Witcher
- Westworld
- Carnival Row (LOL)
- Game of Thrones (no one even expected good past season 7, they just wanted another two good battle scenes like season 6, and satisfying conclusions to the characters they liked)
Now a lot of people are coping that Netflix Avatar, which has been greenlit for 2 more seasons, will listen to feedback and polish out the rough edges, which is obviously not likely.
Maybe it's naive, but I think when a show obviously doesn't work for nearly all viewers, or people consistently make very easily articulate criticisms, you'd try and address it.
it's hard to fathom putting so much working into making a TV show and then not also being extremely invested in what people are saying about it, but most seem either uninterested or contemptuous of it all, and these are hardly auteur projects.--
Always Sunny? It had a pretty cold reception for its first season, then Danny Devito got involved and it became the longest running live action sitcom ever.
I think there's more than a few shows that get better as they find their stride. I think that's different from a show changing course because of feedback. I can think of some times audience reaction affects which characters get brought back or are given prominence, Its harder to think of where they otherwise change the show's direction, and it ends up working.