New overriding scheme means more training. The selling point of 737MAX is any 737 pilot can fly on it without new training.
Anyway, for the sake of selling, they went into the biggest failure of modern aerospace engineering. This should just not have happened.
I am sure the company operating the Titanic didn't exactly strive to have a shipwreck either.
It is always engineer's responsibility to clearly explain the trade-offs to the managers. Only a manager who's making the decision with accurate information can be responsible for it.
So if they can’t hold that promise anyway, why not provide a better interface?