I also feel this way. In the past I was completely satisfied with the recommended content.

I now find it over-calibrates to recommend based on recently watched videos, whether the same channel or the same style.

For example, I watched a video the other day, something like "Boris Johnson pronouncing the word _____". Next thing I know, my recommendations are flooded with similar videos that I don't really want to spend my time on.

This deters me from watching videos that come up that I'm mildly curious in watching, but don't really want to watch more of.