It allows UI designers to add nearly endless settings and controls where they were before limited by dash space. It's similar to how everything having flash for firmware allows shipping buggy products that they justify because they can always fix it with a firmware update.
> It allows UI designers to add nearly endless settings and controls where they were before limited by dash space
Except, they don't do it.
Just like your Windows PC is capable of drawing a raised or sunked 3D button, or a scrollbar, but, they don't do it anymore.