Ideally, I agree with you. The other part of me sees humanity in a transition period of having all of this amazing information at its fingertips but not the smarts to use it, at least for the common person. We need a brain boost to keep up and that could just be the AI we merge with at some point or some genetic/biological enhancement or combination of those, otherwise, I just feel we peaked as a world and will just go up and down until that happens.
Yes, folks have their echo chambers. But alternatively, perhaps we simply teach the new generation better critical thinking skills, introduce uncomfortable viewpoints, and how to better not fall for tricks such as "fake news".
Just because we have problems with echo chambers now doesn't mean that we will in the future. Heck, in a way, the internet is teaching us about our echo chambers - it isn't a new phenomenom (families and community provided it for us), but having a choice in one's echo chamber really is.