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Another interesting aspect is it appears to be using a hacked YouTube channel: https://www.youtube.com/c/RallyArgentinooficial/videos

This channel RallyArgentinooficial at least appears valid, with rally videos going back 3+ years ago with thousands of views.

This is an ongoing problem.

there is a market for stolen accounts

accs-market .com

But I don't know where the fake concurrent live viewers come from, shows 5-20k online.

Well at least a few of the viewers are from HN :o)