So perhaps the question is whether we need legislation to protect us while the new internet social norms are in their infancy, or is it better to be unprotected, so that the norms change more quickly?
It's a good question, and my opinion is it's better to be mostly unprotected. There might be areas where protections make sense, say, if there's great possibility of physical (and perhaps emotional) harm. But I think these have to be pretty narrow: if it's possible to use these protections to get a negative review of your art suppressed, then it's a bad protection.