I'd advise using mechanical HDDs instead. The portable USB-connected ones are quite inexpensive these days. The problem with flash is that it loses charge over time and your data can disappear. This shouldn't happen if you plug it in and power it up regularly, but for something you want to just store and forget about and maybe look at again in 5 or 10 years, it's not a safe storage method.
Years ago I tried uploading my daughter's recital to youtube as a unlisted/private video to share with out of state relatives.
Thanks to the music, it got an instant copyright strike. That was the last time I uploaded to youtube :-/
And that would presumably be evidence of however many doofuses trying to upload their entire music library to YouTube privately.
It both doesn't make sense - you're making a private collection - and also does; YouTube have a for-profit music streaming service.
I guess we're now entering an era where we don't just have to worry about *just* paperclip maximization, but also the dimension of "how many paperclips the humans are leaving in the training data when they walk away from the LLM" :/ - in this case, if you upload 1000 songs into a private playlist then fine, maybe penalize that. But for a single video? That's messed up.
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No, YouTube has no concept of authorized viewers the way Google Docs/Drive does.
YouTube private videos only need the URL.