I read the bitcoin whitepaper several times and yes it says "peer to peer" and not decentralized.

Nevertheless, the technology is decentralized by relying on consensus and not on a central element.
If you'd hack the central element of facebook you can do whatever you want. And since this central element is even replicated you only have to hack one of them since no consensus between them is required.

Bitcoin is far from the vision of "peer to peer" of Nakamoto because of the mining pools which centralizes power again.

Now, steem is a relatively new blockchain, this means it will need a while until the steempower is more distributed to the community.

At the moment it is still very centralized due to the big stake and influence the company has.

At this moment it is up to the community to work on decentralizing it further. Of course, if no one takes the responsibility and everyone says "I prefer having no right what-so-ever in the network I engage in" that's their right. But then they should not complain about the missing decentralization as well.