I don't get comments such as these, or rather I disagree with comments such as these.

It is like saying AF447 was Thales' fault and not Airbus'

For my money (which is a considerable amount if we are talking buying an aeroplane) and in accordance with any international programme management protocol such as PMI or APM. It is absolutely Airbus and Boeing's responsibility to ensure that the components that they procure for their aircraft function as intended.

With thousands of suppliers for any aircraft type, I think it is a dangerous precedent if we learn to shift blame between them.