The Ratio of Response to Effort
As a creator it's always interesting to see the ratio of response to original material versus forwarded/shared material from other sources. I've heard about this from other creators as well, this phenomenon is described below by "Music Is Win" creator Tyler Larson. He is much more likely to get views/response/feedback for cover songs or some of the less serious, even incidental stuff he posts compared to something original that he toiled at for months or longer.
It just reinforces the idea that it's the work that's the joy, not the finished product and certainly not people's reaction to it. I linger on the very fringes of social media so I'm probably not comparable, but my most watched video by far is a sloppy cover of a zep tune recorded on a cheap webcam years ago. Part of that is the unpredictable nature of sharing and/or the way youtube will suggest or link videos. I could make more of an effort to share/"advertise" my videos, but my best efforts are still directed towards improving my craft. I should note that I realize a better song is going to get more views, so I'm not surprised that more people would be inclined to click on my cover of "Rock & Roll" than on my latest weirdly titled prog demo.