If that is your concern and if this does not gain traction then I can explore writing a proposal to instead incorporate downvoting to proposals and witnesses but that is going to create the inverse with the same issue but with witnesses. How do you think recent court rulings about censorship being ok because centralized peeps like facebook and twitter own the content. Just an assumption but wouldnt downvoting other people's content that they can show a history of utilizing and living off of the earning can cause some interesting scenarios? I do not know but if spam is your issue that is understandable and I guess my answer is to not vote for the proposal, create one that implements downvotes fairly to both proposals and witnesses as well as content or just accept that the community approved the watchers proposal to do just that live with the culture that is currently in place that might encourage larger investors to come in and possibly do worse actions.
RE: The Hive Whitepaper and updating the DPoS protocols for downvoting with a community proposal.