Episodes in theaters are not entirely on the show creators pushing for them, the problem is the theaters literally don't have enough active films and they need content for otherwise empty seats. #3 and #4 box office are movies on weeks 6 and 7. Mortal Kombat and Devil wears Prada 2 are not exactly wide demographic reach so until Mando & Grogu they need screen fillers.
If the finale was in June they wouldn't bother. Because then the schedule picks up with Backrooms, Scary Movie, Toy Story 5, another Minions film, Moana (live action), The Odyssey, latest Spiderman, Super Troopers 3, etc. But they might need more filler in the fall with only Resident Evil and Street Fighter