Do they? eg. Once they identify an undesirable topic would they limit their censorship of it to just a single year? Do blocking orders there come with explicit legal recourse for users who believe they are affected inappropriately to petition an impartial court for exclusion (and potentially collect damages from the party that blocked their IP)? Actual questions, I'm genuinely interested.
No idea about China, but in US “they” can, using a secret sentence from a FISA “secret court”, legally prohibit you from absolutely anything, and if you complain to anyone you go to jail.