Do you disagree with the assumption that cells are machines? They seem pretty machine-like to me. I certainly don’t think individual cells have any subjective experience or sense of agency. I would be curious to know where your intuitions diverge here, because if the mind is an emergent phenomenon from machines (cells) then it seems quite likely that a mind could emerge from other, different machines.
Pan-psychists might argue that your subjective consciousness is an aggregate of all the cells/molecules, etc in the system
"While each biological cell operates largely on its own chemical cues, they all coordinate through complex nervous and chemical networks to create your unified, subjective experience."
You might be a rigid materialist
There's definitely research and scholarship that would beg to disagree with you there. At least in terms of completely writing off the notion of "agency" when it comes to cells.
Dr. Michael Levin's lab is doing some pretty cool work. https://drmichaellevin.org/
Yes? Literally no machine ever built by humans is capable of (or even hinting at beginnings of capability for) replication or novel synthesis like cells are, let alone autonomously, it’s quite unconceivable that anyone would take this to be a reasonable assumption in the first place.