My point is that while the brain and neurons are very complex and inherently confusing, there are billions of lifeforms that operate on this architecture and do

My point is that while the brain and neurons are very complex and inherently confusing, there are billions of lifeforms that operate on this architecture and do not display sentience or intelligence. Secondarily, just because neurons are complex on technical level, it does not mean that they should be complex on logical level. For example, in computers if you would look at the CPU structure, on a low level you have quantum effects and tunneling and very insane stuff but on a logical level you are dealing with very trivial boolean logic concepts. I would be not be surprised in a slightest if copying and reverse engineering neurons per se would not be necessary and defining aspect of anything related to AGI.