It will hopefully lead to a democratization of previously expensive settings (e.g. historic, fantastical, large scale events) etc. Many indie movies still have huge budgets and need some kind of sponsor. Now we will hopefully see a wonderful mix of hobbyist, semi-professional and professional fully independent setups that tell stories without worrying about financial risks that are connected to certain forms of artistic expression.
I don't think it is helpful to gatekeep movie making with arbitrary requirements regarding AI usage nor do I believe that the requirement for patrons or state sponsorships that is prevalent in indie movie making are a good thing regarding the current neo-feudal and authoritarian currents.