There should be lots of different, human-scale alternative experiences on the internet that offer up home-cooked, locally-grown, ethically-sourced, code-to-table alternatives to the factory-farmed junk food of the internet. And they should be weird.
The junk food analogy is really good i think, There was already research showing people who read newspapers are more informed then facebook users iirc, Open source platforms should develop to give users higher content quality and eventually validate those design using scientific research (kinda like research on the Mediterranean diet). I think giving users better platforms that enable finding and prioritizing high quality content will lead to a better probability of achieving certain goals (better employment, better financial state, healthier eating, better mental health etc).