>The internet doesn't magically make social, political, religious, and ideological rifts magically disappear, it just seemed like it did because nobody could associate users with their backgrounds.

But one could argue that our modern "Social Media Internet" gives exactly that impression. Whether it's Google, Facebook, Twitter or whatnot: People are being funneled into "ideological bubbles" based on their preferences and being surrounded just by people who share their views.

Thus many people assume they are on the "right side" because everybody in their Internet-social circles thinks exactly like them. That's why many people act so surprised/outraged if they happen to come across somebody from another "social media echo chamber" with completely opposing views.