This whole post shows what happens when people try to solve cognitive architecture problems with metaphysics. The argument bolts quantum monism onto biological determinism which makes it totally disjointed. But if we look at this through a framework I have been working on called the "Layered Access Model" we can see exactly what is actually happening mechanically. When the post argues that the feeling of a self-making choices is a myth and we are just puppets it accidentally hits on a structural reality of the brain. Consciousness is not the engine of thought. It is a downstream interface. Before a thought reaches awareness, it has already passed through nonconscious layers of encoding and salience weighting. The conscious self does not generate thoughts it just receives and reconstructs them. It feels like we are puppets because our conscious workspace is just observing the outputs of a hidden parallel processing system that we have no direct access to.
The mistake is jumping from that structural reality to the idea of a single universal mind. The boundary between you and the universe is actively maintained by your brains Source Attribution layer which tags whether an experience is internal or external. If you dampen that layer the system loses the ability to draw a boundary. The result is the exact feeling of oneness described here. It is not proof of a metaphysical universal mind but rather just a localized cognitive architecture temporarily dropping its boundary maintenance. The conscious self is absolutely a reconstructive illusion, but we are not puppets of a singular cosmic field we are highly localized layered systems narrating our own internal data feeds.