Hmm, this is interesting. This might be a good argument for the word decentralised. But isn't the bitcoin network full of nodes in a distributed fashion? Or is each node like the 'decentralised' diagram in your picture?
Either way, this is a good post with a good source of evidence on how to properly use 'decentralised'. As I read the link I'm thinking that decentralised as the article outlines does describe bitcoin.
The centralized and decentralized systems thrive on the use of authority. The concept of authority and subjugation inhibits the treatment of all humans as equal, which is against the principle of a truly democratic system. These systems emphasize the vertical relationship and weaken the horizontal ones. Consequently, the mutually-beneficial communication and collaborations among local authorities do not exist. On the contrary, distributed systems operate inherently in the principle of justice and equality of all.
The mining pools do have authority as outlined in this article.
If we accept this then we're left with bitcoin being decentralised but not trustless.
