It’s because as we’ve connected more and more people together the less the connections are meaningful or need to be meaningful. If I disagree with you I’ll just go find another person to talk with instead of trying to find a middle ground. This is why extremism is in the rise. It’s much easier to just join a cult like community where everyone agrees.
You can see the obvious GOP Republican Trumpers but there is also a lot of left wing extremism on lemmy, creating an echo chamber which is like the start of a cult.
So the Internet inadvertently is causing loneliness and extremism due to our connections not being meaningful.