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Having a central authority dictate protocol usage for a decentralised network is a contradiction-in-terms.

What you characterise as the ...

"... laissez faire work method of 'post-facto interop' as sole driver for fediverse evolution."

... is how internet standards work. Always has been, always will be.

People doing standards work at IETF, W3C, etc, are not 'MPs of the net', making protocol laws that everyone must follow. They are implementors, documenting best practice in the wild.