Is Bitcoin still Decentralized Currency?

I read this report on coindesk.

This is the question: Is Bitcoin still Decentralized? Or just like some people represent Federal Reserve of Bitcoin? So why merchant accepts Bitcoin and put their money in risk of New Federal Reserve?

PoS, Proof of Stake, has been brought to the world by Peercoin(PPC) almost 2 years. How many people think about this?

What’s your opinion?

Bitcointalk thread:

There are about 50 coins that use POS. TaPOS, DPOS, transparent forging, Economic Clustering, CPOS, not to say cold locked minting, Peershares are all being proposed, discussed, implemented lately. Quite a few people think abou this.