Yet despite boasting about their AI, and how well they know their customers, still manages to regularly recommend shit music and music that you don't listen to.
It's not spying.
Spotify, for example, has to know what songs you listened to and how many times. That's how they pay their artist. ... That's how they barely pay their artists.
On the other hand, Twitch thinks I watched their service 366 days last year for an average of nearly 27 hours a day, so I wouldn't worry too much about them collecting sensitive information.