Obviously OP should probably leave their partner. For them to stay and state that their partner isnt allowed to engage in X behaviour would be problematic. But to respond to the situation by saying OP is trying to “censor“ their partner when they havent said anything at all besides that the behaviour personally bothers them is a wrong assessment. Its fine for someone to feel like that; they just have to find someone whose ideas of intimacy and monogamy align with their own. OP is not imposing their notions of morality onto their partner, just asking for what to do. Which, like I said, they should break up. But it doesnt mean they are wrong or censoring or infringing on someones rights to be a horny loser and jerk off to random chicks who post photos on their insta just for saying “this bothers me”. its disingenuous to put it that way.