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YouTube warns it might make your viewing experience worse if you don't turn off your ad-blocker
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
I'm thinking anonymous visitors are harder to track, and ad-watching farms are probably a thing too, I imagine.
I'm guessing the value is simply a semblance of goodwill, to not be as transparent about their ad-watching mania. Maybe?