I think your analogy supports the GP's point. The recommendation engine doesn't understand that the recommendation is a violation, it makes a heuristic error be

I think your analogy supports the GP's point. The recommendation engine doesn't understand that the recommendation is a violation, it makes a heuristic error because there is an indomitable mountain of content to classify and it lacks the sophistication to accurately do so. It's certainly logical to hold YouTube accountable for the content it recommends, but it's also naive to expect it to achieve the impossible.