The main problem is you have no tactile confirmation of the blinker status.

They may have left some blinking icon on on the screen, but you're watching the road and don't see it.

They may have left that confirmation 'click' sound on, but you can't hear it because you can't adjust the music volume :)

Some parts of the future are always lame! But luckily, they can get better if at least one person cares enough to make facilitate the change :)