A sufficiently intelligent and informed AI existing in the orbit of Alpha Centauri but in no way interacting with any other agent (in the present or future) does not by its very existence remove the capability of every agent in the galaxy to make decisions. That would be a ridiculous way to carve reality.
A sufficiently intelligent and informed AI existing in the orbit of Alpha Centauri but in no way interacting with any other agent (in the present or future) does not by its very existence remove the capability of every agent in the galaxy to make decisions. That would be a ridiculous way to carve reality.
The characteristic of the universe that allows or prevents the existence of such an AI is what is being carved.