I've asked myself the same question. And the only plausible answer I can come up with is that the engineers working on the 737 Max view it the same way I view a

I've asked myself the same question. And the only plausible answer I can come up with is that the engineers working on the 737 Max view it the same way I view a lot of legacy code. They barely understand how it works; are kind of surprised that it does work; and have no inclination to try to change it.