I obviously don't know your personal experience, but your description is still how YouTube works for me. For example, over the holidays I would occasionally put on a video from a channel that plays holiday music with various videos of this guy's model train setup in the background. I immediately started receiving model train videos, which, of course, I had to click on and now I know a little bit about trains and building realistic environment models.
That being said, occasionally I do have to go into my Google data and clear/clean the watch history to reorient my recommendations.