I think it is far too early in this experiment to create governance to protect people.
Start moderating the heck out of everything right now and you have a platform that has no real differenciation from any other except that it is built on a blockchain. Is that enough? Sure... Why not?
But I think we should look at how the concept of reputation as manifested in up- and down-votes can regulate these things and stay true to the experiment.
I have to notice that you did not give any concrete examples of charlatans. Worried about getting down-voted?
Let's let the experiment run on for a bit. There are spontaneously arising governance experiments here already.
If you want to call on some nebulous central authority to fix things... Well... Facebook exists already.
RE: A question for the Steemit community about the mechanism of downvoting and the dangers of charlatans