Gource Visualization video which points to https://www.youtube.com/watch?v=S7JB0mhrGCQ does not work anymore.
> Video unavailable > This video is no longer available because the YouTube account associated with this video has been terminated.
> Video unavailable > This video is no longer available because the YouTube account associated with this video has been terminated.
YouTube is free to delete any account, even just to cut costs.
If you want something to stay around on the internet it has to take up space on somebody's drive and bandwidth on somebody's network connection - and for sufficiently large content like video you're going to have to do that yourself or convince/pay someone you trust to do so on your behalf.
Something like Mastodon/Pleroma.
Also there is a solution already, it's called "The Internet". Upload your content far and wide.
"Terminated" is a pretty harsh wording for an account that was willingly deleted.
When you resign nobody says you got terminated. You are terminated when you are fired.