Yep, this Max business is going to be a millstone around Boeing’s neck for many years. Shortly after those two crashes I read a short description of how the plane was designed. It’s essentially the existing 737 but with larger, heavier engines. Because of their size and weight, the engines had to be mounted at a different location on the wings, causing a significant weight shift. The software then had to be kludged to compensate. And then there was matter of insufficient training . . .
“Because of their size and weight, the engines had to be mounted at a different location on the wings, causing a significant weight shift. “
Not just that but they had more power. So during take off and climb out that extra thrust, that is below the center of mass, changes out the plane behaves. They patched that with software to make it behave the ‘same’ as the NG. And we have seen how well that worked.