Personally that would delete a lot of niche music videos where it's been like 10 years since they last uploaded to that channel.
As much as I don't like Google or Youtube - expectation that they will just store whatever stupid stuff you post forever is unreasonable.
Like I posted some gaming highlights when I was teen and I don't think anyone, but I have ever watched them and I don't even have access to that account anymore. All of that stuff should be deleted.
Even now I occasionally have itch to make a video and I am the only one who watches them, but at least they are good enough for me that I return to watch them.