Airbus may have their head in the sand - but Boeing did the same with the rudder and are still doing it with the fuel pumps. It too a lot of effort to get Boeing to fix the rudders (or even admit to the problem in the first place).
Maybe Airbus and Boeing are reluctant to admit problems if they are worried about getting their @rses sued off in the ludicrous American legal system. that is why Piper stopped producing aroplanes for some years - product liability litigation.