YouTube Regrets - A crowdsourced investigation into YouTube's recommendation algorithm, using data volunteered by 37,000 users via a browser extension
I can't say I'm surprised.
Recommendation algorithms, even at their best, push people into grooves, homogenizing results.
At their worst...well the article speaks well to that.
Mildly amusing personal ancedote:
I don't trust algorithms, especially algorithms that can't be publically audited and verified.
I will not enter a self-driving car that I can't override in a millisecond.