They didn’t get explicit permission, but they also didnt get shut down.
Also, the “filmed without permission” is weird phrasing anyway. Does every indy movie in other countries get explicit permission from the government to be filmed? A Wiki article for, say, an Australian indy movie about queer people that covers Australian oppression of the indigenous wouldn’t go out of its way to mention “the government didn’t give permission for it to be filmed” because why would it? The government doesn’t need to approve such project. Including the “government didnt give permission” feels like editorializing to make things sound more sinister then they are.