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There was a viewboost exploit that involved opening up thousands of tiny windows. This was widely known in the Asian and widely used to boost streamers, indies were doing it too
Youtube patched that exploit, which was good. But then they went a bit too far by flagging people who posted emotes in chat. So it was a mixed bag
I think the point is, the numbers don't matter and they never did. It is pretty dishonest that these botted views are still counting towards the view total, considering youtube pays out money for every couple thousand views on your videos. So these people are still defrauding youtube by a lot