Your comment made one word immediately pop to mind - rotten? But I'm increasingly of the opinion that the 'dark stuff' on the internet isn't really the problem, so much as the seemingly innocuous stuff like people posting extremely 'select', if not outright fabricated, sections of their lives on social media. It gives people a mistaken perception of what their own life is like or what it could/should be like. Even more when this is taken to the next level with insecure kids consuming and interacting with one another in this context.

And then there's the issue with ourselves even. We pretty much all do, say, and believe dumb things when we're younger. It's just a part of growing up. But I can't imagine what life must be like if you mix this reality with social media. Not only does this then stay attached to you forever, but pretty much anything can be artificially reinforced. With both factors probably working to impair general maturation.

These are all just consequences of 'normal' things that you'd have even if we censored 100% of vice on the internet, and it's still quite awful.