I think it's because people care about fixing broken things in the world. There's no mystery here. We want to know what's broken in order to discuss and debate

I think it's because people care about fixing broken things in the world. There's no mystery here. We want to know what's broken in order to discuss and debate solutions. If there's perception of injustice or bad practice in the community, then yes people will click the negativity. Apart from that there's the "popcorn" consumption, where negative things are more entertaining.