IMO there's very little on the internet that's significantly more toxic than Hollywood movies and pop music. Porn, I guess.

If you do find it: congrats, you must be pretty inventive.

On the extremist content: those people are not well versed. If you reaaaally want to you can let it brainwash you, but at that point a book could do the job as well.

And: internet extremists don't have significant attention spans and can barely act in the world. If they learned how to read, well... they'd soon know better.

Are "book extremists" still a thing?