[areeh]

I'm not sure how Twitter works, but for YouTube it's not like their recommendation system is a perfect user-friendly algorithm.

While it is your choice what to click, what you end up watching is a result of the interplay between you and what is recommended to you and if the recommendation system was different, both what you click and the resulting feed would be different as well

[ars]

Experimented with this on YouTube. My recommendations are exactly the things that I watched.

In fact I got kind of bored because I wanted something new and different, instead I just get more videos of exactly the same type.

If I stop watching a certain kind of video it eventually stops showing up on the recommendations.