Since the internet(and sophisticated algorithms) are relatively new, it's too early to judge the positive/negative impact.

But if we look through history to the industrial revolution, powerful technologies we're created, but new political tools we're created in order integrate those technologies in society in a positive way. We had the rise of democracies,wage laws and the labour movement, the social safety net, the geneva convention, etc. Without those ,we might have seen a far more negative contribution from technology.

I believe the same applies for internet technology and smart algorithm. In the wrong political context, it could be turned into a living hell.