Only if you can keep up with the new addresses the coins are sent to, and if they decide to send some of the coins to random legitimate accounts en masse, now p

Only if you can keep up with the new addresses the coins are sent to, and if they decide to send some of the coins to random legitimate accounts en masse, now pools will be blocking countless legitimate accounts that have no connection to the censored address. It would require some kind of central agency that can track and immediately update a list of censored addresses.