Good luck getting any change into Bitcoin that isn't good for every participant of the network. The last time people tried this, users, not even those users with the most Bitcoin at stake, were able to produce enough chaos and generate enough risk that they failed. Ethereum is capable of full consensus mechanism changes that hurt subsets of the network who don't hold the majority of Eth, the latest of which just further entrenched that ability.

I personally prefer the former for that reason, but by your critique, Ethereum is practically conducive to keeping the people who control the protocol small. Bitcoin is probably headed to a version freeze this decade, which is great.