I’ve always thought that the short stories “Usher II” from The Martian Chronicles and “The Exiles” from The Illustrated Man expanded upon/played around with the anti-censorship themes from Farenheit 451. Given that the focus of both of these stories is outrage at bureaucratic and government-enforced censorship, and that
I’d say that Farenheit was decidedly anti-censorship, and not anti-tv. Was The Twonky set in the Farenheit/Martian Chronicles universe? I seem to recall other stories from The Martian Chronicles that reference the censorship/book burning, but I don’t have a copy here with me to consult.