I see this a lot nowadays. It just keeps recycling the same things and feels stale.

I remember about a year ago, it got into a weird state where I watched an old Cat Power music video, then every time I looked at recommendations on other videos it was recommending it, again and again... I'd watch the video again to hopefully make it go away, and it would still keep recommending it. It was very strange. I ended up just choosing "Don't recommend this" on it.