We are still parsing the fact some mass shooters have and others have not sought celebrity, whether or not they intended to survive. For my money it is just one of many factors, because shooting rampages have unfortunately become so common they do not all share the same major contributing factors. We cannot say "it is all because of notoriety/mental illness/resentment" because, while each has been a major factor in many shootings, each has been absent in many others. However, I maintain that the notoriety mass murderers receive remains a prime motivator for many of them, whether or not they intend to survive. If infamy is the sole desire, survival is not required, and, as with so much else, spectacular destruction is easier than spectacular creation (making it, of course, an admission of inadequacy.)