This is already sort of here, and badly. If you're on Mojave, open up the built-in News.app. Resize the window (it's terribly slow). Mouse hover states aren'

This is already sort of here, and badly. If you're on Mojave, open up the built-in News.app. Resize the window (it's terribly slow). Mouse hover states aren't even there. Bouncing over-scroll is still present. The speed at which Apple can successfully make this not-awful is probably a good indicator of them trying to make it ship for all developers.