The users can only control by killing Bitcoin by selling it. Otherwise they control nothing in face of (and would be slaves to) a 51% attack which can change the protocol at-will such as increasing the number of coins to 1 billion or what ever.

Please stay on the facts.

And don't try to argue that the miners would never do that and that they have no incentive to do that, because they need the coins to be worth something. If that was stopping them, then they wouldn't be attacking now. Obviously inflation never stopped anyone from using fiat. In short, they can raise fees to any level they think the market will bear. They can mint coins at a faster rate when they need to, etc..

They will be able to manipulate the exchanges at-will by doing shenanigans when ever they want to short the price, etc..

You simply can't have a currency with a controller that is not benevolent. And the BU Chinaman has said that hashrate is a like an army and must be employed in a 51% attack to block all transactions on and to kill the minority chain.