maybe to stop the .01%. switching to app only, sign in only would get them pretty much all the way there.

They own the os, with sign-in, integrity checks, and the inability to install anything on it Google doesn't want you to install they could make it pretty much impossible to view the videos on a device capable of capturing them for the vast majority of people. Combine that with a generation raised in sandboxes and their content would be safe.

"their" content? This is Youtube.

Of course, the same can be said for FB, Tiktok, instagram, Pintrest, reddit, ... and I'm sure the list keeps going. Frankly, Youtube is pretty damn good about this, really.