Why does 1.5.0 require ControllersForAll?

Why does 1.5.0 require ControllersForAll? At least for iOS?

The greatest thing with RetroArch linking straight to BTStack without the need of ControllersForAll was the immense benefit that you could use the PS Home Button to open up RGUI in an instant, making it so an Overlay is not needed at all on the phone.

Will it ever come back? :c