That’s exactly what a coverup looks like. At that time, they knew they had significant airworthiness issues AND that they had deliberately removed mention of the MCAS system from the training guides in support of their marketing pitch that it’d save the airlines a ton of training costs. Those pilots did what they were trained to do but he lied about it trying to cover up the problems which Boeing had known about years earlier because that would make his company liable.

The awful software they intentionally made not redundant so they wouldn't have to retrain and inform the pilots about it, as it would have then be classified as Security Critical (which it obviously was)?

Also first blaming bad maintenance then poor training, when they knew they fucked up?

They already knew what was the problem before and during those crashes.

But never admitted anything and deflected any problem until the very last second when it was already so obvious.