Who can trust the internet? No sane person would trust the internet. We have fanaticism on all sides. And yes it I do mean all -your side too. No matter which side you are on, your ability to see what you have in common with others is impaired.
Have you listened to political ads on the internet, tv and radio. They are all of a kind "X is betraying you and has sold his/her/its soul to the devil" So vote for Y. There is nothing in those to build consensus or common understanding. There is everything to outrage us, embitter us, and divide us.
This is the problem.
Tracking ads are a social disease that can destroy our society by preventing us from having a society. And yes it is much more complex, but it is also just that simple.