My guess is that it was used as a paid ad in other YouTube videos. Channels will often do that quickly accumulate view count, which would help in organic rankin

My guess is that it was used as a paid ad in other YouTube videos. Channels will often do that quickly accumulate view count, which would help in organic rankings as well. In this case, it doesn't seem to have worked very well. Maybe it was unlisted at first and only recently made public?