The problem is on both sides. The same MBA led behavioural incentives developed in tandem in the regulators. Senior staff with a deep understanding of the issues were replaced by compliant managers that allowed the corporate capture that ensured effective oversight would be neutered.
Demoralized middle level staff then started leaving and were replaced by new hires without the knowledge and experience to know what was important and what wasn’t and brought a tick box mentality to every task.
The sad fact is that the MAX fiasco was probably inevitable, and if it wasn’t the MCAS, some other cheese hole would have lined up.