Elon's playing word games. When the average person talks about State Affiliated Media they're referring to editorial control. As far as I know NPR has always had editorial control and goes to great lengths to maintain neutrality in their writing. They've certainly screwed up in major ways before, but compared to MSNBC, Fox, the NYT, NYP, and CNN I'd say NPR looks like a saint.
The irony I see here is that Twitter is on record as to being involved in suppression exercises around COVID, where they basically acted as the governments hands to suppress legitimate voices. Given that, Twitter needs to wear its own State Affiliated Media badge. Hell, what do you even call an entity that willfully suppresses valid and good information that is not favorable to the government? A state apologist?