Define whim, and how does it relate to being centralized? I don't think there is anyone forcing the miners to keep another Ethereum classic running.

That's quite a whim. It's been the plan since 2014.

Oh, so totally not centralized if there is a central plan. Totally no central group of committers so no centralization, totally no lead developers speaking at conferences providing direction and leadership.

Got it.

Decentralized.

It was supposed to transition to PoS from the beginning.

On a "whim" in so far as miners agree on the change.

And that change took years for everyone to standardize and design and then agree on to activate.

Miners have no say in it.

They "only" participate in the on chain consensus while the switch to PoS is governed by the underlying social consensus of what code to run.