Yes, if I talk about Steem it's no longer decentralized because all the funds are practical with Justin because he has bought it from Ned. But here on Hive, it's 99% with the community and no single entity is holding that fund, like proposal fund or any fund which will be community-driven.

But again if top witnesses here on Hive want something to be done of this sort, there are investors who can actually unvote them and vote someone who works for the community. Also out here, Exchanges will not take part in the witness decision which was not the case on Steem. So I think as of now Hive is decentralized as a whole. But again since there is too much power on the witnesses you never know. I am only talking about DPos system where financial backing have a say.

But Blockchain as a technology will be fully decentralized where the other party will not know who are you, and they will know with your BTC address or any address as such.