For the sake of those that I also want to watch the video, (I will withold the name of the curator)
This curator is not really a random curator. I think he maintains a habit, upvote some group of people randomly for like a year and let them be, and they're left wondering what they've done wrong. What they don't know is that the curator only decided to shuffle the list of the people he curates.
Your video was interesting to watch, and I wish people can watch more, rather than throwing comments without taking the time to watch.
I don't really weigh the quality of my content, I just feel they're fair enough and sometimes educative (except for my random health complications rant)
As for the first group of people. I read the post of this guy who said he was tired of Hive because people rarely commented on his post. Someone commented and asked if he also did the same and he wasn't sure. I think he got tired that his expectations weren't met and decided to power down everything and go. Expectations with effort can ruin people.