The undemocratic part was not that one. Like I said: "even if everyone was entitled to a vote and to change it whenever they want" and then carried out the argument based on that alternative scenario to bitcoin reality and explained why that would be a bad system.

The reality is that just an handful of people can vote in this system, the ones that control all the mining. All other people are left using a system in which they have no say.

That's a classical textbook Plutocracy and completely un-democratic.