YouTube is OWNED by Google.
Google is an ADVERTISING company. That's A D V E R T I S I N G! They are there to SELL things. They charge the companies who comprise their clients actual MONEY for placing the ADS in front of viewers (or supposed viewers). They claim to RECOMMEND viewers according to their INTERESTS. This is why they have kept every scrap of data on every Google/YouTube user since the time when Google was a single computer in a college dorm room. They claim that their advertising is directed at people with an interest in "your" product.
So it is in their FINANCIAL interest to report to those paying clients that people are actually interested in and VIEWING the shows and videos that they place the ads in.
And if there aren't enough people interested in a particular product, then what do they do? Do you think, do you just think that they may be tempted to MANUFACTURE those "interested" people?
Naaaah! Google, YouTube wouldn't do that. No, certainly not!
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