And capability is not equivalent to capacity, so the predictions about the total computing power of computers may not be applicable when considering artificial intelligence.
Life has sentience, and thinks. Mechanical devices compute. But who decided these two phenomena were either the same, or even so similar as to be considered "cousins"?
I'm afraid it's not really my area of expertise.
As a biologist with some knowledge of the brain's workings, I think computation could be a sort of "cousin" to biological thought. As I say, it's not my area of expertise, but I think it's a reasonable possibility.