[mceachen]

Perhaps broach the fact that social networks are really just advertisement delivery networks, and that they found that partitioning audiences by interests let them sell you for more money.

Try opening an incognito tab and search for flat earth on youtube, and then see what videos that window gets recommended, if they don't believe you.

[markvdb]

One usually _wants_ to stay where one feels comfortable. Human nature. Whether one realises one's in a bubble will only rarely change that.