As shown in my article, current voting rules cause centralization and recently allowed exchanges to set up all 20 top witnesses.
Interesting, that community witnesses talk a lot about decentralization but avoid any discussion about the power centralizing voting rule.
Another similar post didn't get much traction among the big guys either or didn't get upvotes from the big guys either.
RE: Fact: Steemit Sybil Attacked the Steem Blockchain