The rational reason for this is to level-up a bunch of accounts so you can form voting-rings and steer discussions by abusing flag and vouch buttons.
Welp, that's not very nice.
Good luck.
And how exactly is your video "Encyclopedia Historica Dinosaurs, by Robert Sabuda and Matthew Reinhart" important and informative? It's a worthless video with stock music and no talking, uploaded on YouTube four days ago without any views.
What was so important and informative about this video, and how could you possibly have found that video considering you said it's not yours?
Your other video is something that was already discussed on HN,
GitHub Copilot Workspace: Technical Preview (https://news.ycombinator.com/item?id=40200081) - Apr 2024 (322 comments)
Are these posts visible to you? because in a private window I checked they aren't visible to me.