Justin and the sybil attackers got off easy. For PoS systems in general, the intent is to take drastic actions against a single stakeholder who attacks the network, instead the stakeholders that matter simply walked away.
The people left on steem now have the misguided belief that any money is good money, even if it's Justin Sun's. To any informed person in the cryptosphere, Justin Sun is a joke. They will soon learn a hard lesson. Steemit now filtering and downvoting is a good indication of that. I can't get out of that fast enough, the best I can hope for is a few pumps to sell into, but at this point I'll settle for transfers being operational in 13 weeks.