Google: YouTube analytics are important, we can't have bot/inactive subscribers, which is why we remove them.
Also Google:
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It's real, this was a screenshot of their newest video (at the time of me saying this), which at the moment is uploaded 1 hour ago with 3.2 million views.
Their viewer count is all over the place (from 2500 to 3.2 million and everything inbetween) and they have a subscriber count of around 7.4 million.