This is exactly the problem with any recommendation engine, IME. They either:

1. Feed you nothing but content about something you looked at once.

2. Show you stuff you already bought. No, I don't need another exact or very similar XYZ widget; show me something RELATED yet very different, thank you very much.

3. They show absolute garbage that is in no way related to what I like.

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Exhausting, really; and, probably why most people find AI/ML largely useless as it exists today.