I think if you look at a character like light or jigsaw and wonder why they’re not carrying out your idea of justice, you’ve lost the plot, like literally that is not the plot of either narrative and “people who truly ‘deserve it’ getting brutalized for the viewer’s entertainment” would be a totally juvenile premise that would be a million times more reactionary because the average viewer does think that drug addicts, people who’ve been to prison, etc “deserve it.” The average viewer has a lot in common with jigsaw and yet saw puts the viewer in the position of wanting to see jigsaw’s victims, the same people they’d probably be disgusted by irl, escape his “punishment.” For all the ways death note sucks, it does establish very early on that light is a tyrant who has to be stopped. Both of which are immensely more effective at making the audience question their base assumptions than the wish-fulfillment desires im referencing in the initial post