> Its not a reality check its more akin to mindfulness meditation. Momento mori, a reminder that it is so easy to die of stupid things in this world.

I find it very weird that you need gore for a memento mori.

> As far as I’m aware, this is not the case for video games and violent movies, so I don’t buy it for liveleak content.

Well, if I think about how I felt while watching this stuff (very, very uneasy) versus how I felt while gaming or watching movies I'd say there's quite a difference. So I would argue that the brain indeed processes those things differently.