This may start to become a serious issue.
I was checking out the Phenomizm, but I can’t because the YouTube user associated with that video closed their account.
I think YYE, as should any company, have control over any stuff they are making available on their site. I’m not saying “ban YouTube”. What I am saying is that don’t rely on other people to have certain things available. Get permissions to host or post or otherwise have authorization to have access/control over the content so that what when the original goes away, it has no impact.
You can’t rely on someone else to keep something up.