Having worked at NXP for a short time, I agree with you but I have the impression that most of the unwillingness to be open (with those things it makes perfect

Having worked at NXP for a short time, I agree with you but I have the impression that most of the unwillingness to be open (with those things it makes perfect sense to be open about) comes from laziness and fear of unintended consequences. The center of gravity of power is held by groups with security focuses and they're supposed to be professional paranoids... It's just unfortunate that the least effort, safest decision for many other folks is one which can be seen as consistent with what those groups would have made.