Are there any arguments against an opt-in filter? You'd have to ensure that we don't ask people what the state of their filter is. If it becomes routine for (s

Are there any arguments against an opt-in filter? You'd have to ensure that we don't ask people what the state of their filter is. If it becomes routine for (say) politicians, teachers, nurses to be asked at job interviews/elections what the state of their filter is ("Have you opted in to the filter? No? So you watch porn then.") then you're going to be forcing lots of people to be anti-sex and anti-porn.