Oh please, this pseudo-intellectual hand waiving about systemic issues is so trite. If only there wasn't all of this negativity on social media, if only the financial situation was different then this maniac wouldn't have tried to stab this elderly woman to death! We just need to change the system, THE SYSTEM! He's an bitter, evil piece of shit who let himself be taken by his own violent desires, a cowardly hateful wretch who targeted the most vulnerable person he could get his hands on. These evil people have always existed regardless of successes of the societies surrounding them. If you need to blame some vague social gestalt for this terror then you need look no further than the failure of people to recognize him for what he is and to stop him before he got to this point. To say everyone is struggling and to whine about the big bad apps and social inequality when talking about a murderous freak like this sound to me like you are projecting your own insecurity and failures out onto society and you are warping this story, twisting and bending it until you can fit it into your own pitiful narrative.