The main problem is just that a lot of this stuff is being tied to huge, (generally) well-remembered franchises so there is more eyes on it, and its directly comparing itself to better works. For example, The Acolyte might be okay by the standards of being just another sci-fi show, or as a fanfiction where the expectations are lower, but not when it puts itself alongside other main-line entries like the original trilogy, or even something modern like The Mandalorian.