Does the murder add meaning?

One of the panel presentations brought up the theory that Meursault killing the Arab added meaning to his life. I thought this was really interesting because it seems to be true but in a sort of ironic way. I think the murder does add meaning to Meursault's life because it is the first time that his actions make a difference. Throughout the book, Meursault claimed that it didn't matter what he did because his actions had no definite consequences. When Meursault pulled the trigger and killed that man, he ended up condemning himself and in Meursault's religionless world, death is final and absolute. At last, something that Meursault did, did have a definite consequence. This idea goes against his theory that life is absurd but at the same time, life around him will go on even after his death, affirming that, in fact, his life was meaningless and absurd. The kind of meaning that is added to his like is really just being an example to those who have not realized how meaningless it all is. By being publicly executed, Meursault is both an example of the punishment that comes with breaking the law and a tool that makes the people watching the execution appreciate life. The people see Meursault's life ending permanently and even for the most religious person, the idea of it all ending is terrifying. Meursault, in his enlightened state at the end of the novel, would say that this affirms the idea that even though life is absurd and appears, in the long run, completely pointless, human beings love being alive and love living their insignificant little even though it will all have to end. Its interesting that the depression of impending death led the seemingly emotionless Meursault to such a life affirming  conclusion.