It seems like decentralization is just another word. It doesn't exist. I will not name people, but I have seen witnesses who misuse their power by upvoting those who do oil-messaging to them.
About whether someone is VIP in the eyes of Top20 or not, the evidence is for everyone to see. Justin bribed them and overtook steem.

Decentralization on paper is equivalent to communism on paper.
It looks good only on paper, not in the real world.