What we can do as technologists is establish clear norms around information junk food for our children and close acquaintances, and influence others to do the same.

It's not going to happen overnight -- as with many such things, I expect it'll take decades of mistakes followed by decades of repairing them. What we've learned from other such mistakes is that saying "feel bad about the dumb thing" ("be worried") is less effective than "here's a smart thing you can do instead".