By all accounts the CPUs we've made with ridiculous stuff like 2nm transistors is _surely_ more advanced than neurons, right? We just haven't figured out how to wire them properly :)
At times we get all giddy because we have invented a quartz clock, a wheel, a straight line or a calculator that seems to be better than anything in the world of nature, however, we sometimes have to overlook nature or forget to question why nature didn't evolve such things. With the clock, every cell in our body has some 'timing circuitry' tied into day/night cycles, seasons and much else. We just insist on doing it our way and proclaiming it better.