> Given that it would be available on any video content, the feature needed to be discoverable and straight-forward for as many people as possible.

This is the designer’s nightmare: Every feature needs to be available to everyone, therefore be visible on the screen. Yet they only cite rare usecases: « Watching sports event while continuing to browse the web ». In the meantime, the blue tone isn’t generally consistent with the websites’ colors.

I would have supposed moderatelt-used features belongs in the right-click menu like the rest, or they need to find a way to merge it with the video controls (I guess an Apple designer would imagine a new kind of special press to detach the video, which is fine too).