YouTube doesn't seem to understand my preferences, at all. It's far, far too biased toward what you recently watched. It basically doesn't work and certainly doesn't "learn" anything.
I feel like every recommendation service works this way - YouTube, Amazon, Spotify, etc. Whatever the last thing you looked at becomes your entire life's mission according to these systems. When I think about all the buzz words around machine learning, ai, and so on, it's completely incompatible with the reality I see. What exactly are all these engineering teams doing just to end up with this result? Amazon might be…
With that in mind, I think Youtube recommendations are quite good. Just do it when your recommendations get stale, monthly or so.
I wish other platforms had that like Amazon.