“There, I fixed it.”
Infantile wrong.
Not at all. The FAA would never certify for airworthiness a system with a known single point of failure, period.
Engineers inside Boeing would never not point out the software system had a single point of failure to their superiors.
The low end variant of this plane override pilot commands based on a single sensors input.
Meaning if that single sensor failed it would override the pilot, which is exactly what appears to have happened in both these crashes.
Which means Boeing either lied, explicitely or by omission to the FAA about how this software and variant operated, or they bribed someone or someones in the FAA to get the certification.
There is zero doubt that BOEING engaged in criminal activity to get this plane certified.