people are not complaining because AI is not on genius levels. People complain because AI in sequels is worse than in previous intallmets. Hell, I still remember that CivV could not manage citizen allocation until G&K, while CivIV and Alpha Centaury had it working without problems in 1999. Even in 1999 AI would not place city on starvation just because you clicked production focus, which was a common thing in CivV. When things get worse, then people start to complain.