I have a lot of privated YouTube videos, the amount clocking in the hundreds. I would like to share all of them with one person, i.e. let only them be able to see all of those hundreds of videos.
YouTube's mass-selection interface doesn't let me share all the videos with anyone, only letting me mass-change all of their visibility between Public, Unlisted, and Private. This is true for both YouTube Studio Beta and Creator Studio Classic.
Adding them all into a private playlist doesn't work, because you can't specifically share a private playlist with anyone.
The closest thing I get is to make all of the videos Unlisted and make the playlist Unlisted, but there is a specific reason I want to make the videos private instead of unlisted.
How do I do this?