Internet is an amazing thing, but also is a terrible thing. You can use it to improve yourself and your life or you can use it to foster addictions like watching porn all day or gamble or gossiping.
Internet did not invented cognitive bubbles. When I was a child I was member of a Church, it was a bubble. Then I met atheists in Reddit, another bubble. A country is a bubble, with their media only giving people one view. I have traveled a lot around the world and every country is a bubble.
For example, how many Americans have a strong opinion on Putin without understanding Russian or Ukranian, having traveled to Ukraine or talked to the people there. Their opinion is not their own, it has been implanted by the media from people with strong economic interest in the region but they believe their opinion is valid because everybody(there) agrees with each other.
I have Ukrainian friends on both sides, traveled the country, and what is told in Western media is totally deceiving. But in Europe lots of people speak those languages, know people and understand the region. It is way harder to deceive them.
It is like North Korea media telling the people that West society is poor(like they say) or Florida is a desert with no water. Koreans will believe it, but a lot of Americans will not.
It is your personal decision to cultivate yourself and use the tools you have at your disposal for good and not for bad.
If you don't like the tools at your disposal, as a programmer lots of people here could do something about it. HN itself it such a tool, or example, when reddit diluted his great content in order to gain popularity-money.