Time heals all wounds, so to speak. Boeing suffered a pretty bad PR problem, which then drove cancelled orders and more. It will take time to earn that trust back with the 737-MAX, however there's still plenty of 767, 787, some 747, and a few 757's still flying without any problems.
It may shock you that pilot error is the leading cause of airline crashes.
Nevertheless, to your point these crashes occurred due to "fixable problems" sure...and anytime a plane crashes due to "fisable problems" legally it goes without saying there was negligence. But what seems to be ignored here is there was more than negligence...based on the documents already made publicly available the company knowingly shipped the planes with the issue.
>Time heals all wounds, so to speak.
Well I'm sure that was what the managers thought when they minimized the engineers concerns about these aircraft...then again you don't see very many Zeppelins flying around nowadays.
Its a lot more than that...planes crashed and people died.
It doesn't matter if you fix the underlying problems, there will be a giant loss of confidence in the company and the product. That is all rightfully so, the company put profits in front of safety, and there is no reason to believe that will be fixed.