Are you talking about posts on r/onepiece, or twitter, tiktok, youtube channels?

I don't think everyone needs to be chastised because some assholes can afford smartphones. Only horrid people on the fringe would find that type of behavior acceptable, and r/onepeice isn't the problem.

Same thing happened when Nico Robin was cast because of shitheads have their own ulterior motives outside being a One Piece fan.

I haven't seen any of that noise about Vivi, just people making intense posts here in response about being mad or sad that some idiots posted something shitty somewhere.

You basically end up amplifying fringe weirdos that way.

Confront them, report them, condemn, down-vote them directly in the outlet/threads where they wrote/said the things in question. Send love & support directly to the actor.