Why is williams still bringing up senna died in a tragic accedent?

we know how and wat killed him we know they repaird the steering coloum by welding up and didnt put a new one on they know that they are to blame senna died by there misstake in f1 mag this mth they say the car was bottoming out well we know that it was not right they are just keeping things to there selfs the tire was also the falt as it hit his head so the holl thing is still not clear we all know they r the in the wrong for saying they think it was the car was bottoming out