I'd argue the system is working quite well, every individual and/or community has the liberty to choose what to do about Meta.

That's what federation is all about, no central power taking decisions in behalf of everyone else.

I disagree that fediverse is inherently libertarian/anarchist. In fact, a big selling point is that you can find an instance the administration agrees with your politics and will implement moderation policy accordingly.

Sure, to a certain extent. But having an ability to opt out is far healthier than the walled gardens we have now.

There already is that someone, it's the owner of the .world instances.