I see your point- what I was trying to say was that, Seller is a kind of... social way to make consensus, based on trusted nodes, not just raw hashing power- you know?
Anyway I probably didn't express it clearly, I'm still trying to get the hang of writing these sort of informal articles.
I haven't been keeping tabs on stellar lately, but I'm sure there was a time when it only had one trusted node running the whole network because of a bug. It was totally centralized at that time, it had no consensus between nodes.
https://cointelegraph.com/news/stellar-switches-to-centralized-system-after-node-issue-causes-accidental-forkHow many nodes are running the new consensus protocol today?