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That's the idea. Whatever the stakeholders (via their chosen witnesses) decide is the chain, is the chain the software is licensed for. Anyone can make changes, and Steemit is not any sort of gatekeeper in that sense.

The Ethereum situation was a total clusterfuck, and I have a feeling if it had been based on stake, Ethereum Classic would be the only one standing. Instead, Vitalik declared himself BDFL and destroyed a ton of value by fracturing his community. Fortunately, they were mostly able to recover.

We just want to make sure that any changes to steemdresult in a benefit to everyone who holds STEEM.

The Ethereum situation was a total clusterfuck

No. It was express of freedom. People which had private keys end up having both coins, so technically speaking. So if we would assume that:
Ethereum market cap before hartfork = ETH market cap + ETC market cap, then no one actually lost anything. People could do whatever they want - they could sell ETH or ETC - they could vote with own stake.

That would actually increase value of my STEEM. New fork will probably have new development team, what means more innovation - and all initial stakeholders would benefit from that.