The 1990s of those initial failures also predated the information heavy internet hyper analysis and outrage machines
What arguments do you have that show that lots and lots of articles about about Boeings culture change are all wrong or insignificant (not a contributor to the Max's issues)?
I'm also not sure why you think a heuristic that uses amount of outrage as an inverse measure of the validity of an issue is a useful one. I would assume the connection is either non-existent or very weak, meaning you cannot infer anything useful about an issue from how much it is being discussed in the media and in public forums.