Any argument against the coherency of the individual also negates any coherency of the group. That route is a nonstarter.
Emergence, complexity, systems, etc. etc. etc. I don't need to bother trying to bring you up to speed from - well - the eighteenth century.
Bees and ants do not have agency or individual autonomy; and yet there is a coherency to them as a group. It's a nonstarter to claim that we need individual autonomy in order to talk about coherency at various levels of complexity.
I won't argue this with you any further because it's a waste of my time.
By making a choice I must affirm my own autonomy to do so. This is what Kant was suggesting validated the idea of free will. I'm not even trying to go that far.
Kant's not the authority in this case. Developments in cognitive philosophy and neuroscience seriously call that claim into doubt.
Language doesn't express the coherence or unity of a central self; language functionally divides the self, makes it inauthentic. If free will exists, it doesn't share living space with the likes of you. You have an image of a self - an illusion, a dream of being a person. Your body makes decisions without you, and tells you about it after the fact.
We need to begin seeing ourselves as parts of a system, not as precious little gems of self-contained genius and intention.
Registers to who? To what? Those things which lack coherency?
Step on a scale. Log your weight. Now step off.
Okay, now step back on the scale; but this time, think about some really
heavy intention or interior thought you have.
Log your weight again, and tell me if it's higher.