The process from the first MAX crash to decertification of all MAX aircraft was a few months. Boeing made all the wrong decisions in that period of time. Other companies have handled crises much better. I think GP is referring to this.

It's one very bad thing to have allowed shoddy engineering and all the other failures on the way to the MAX, and quite another much worse thing to then also stick your head in the sand and pretend everything is ok when the shoddy engineering kills people.