Are touchscreens in cars dangerous?

It isn't just the touch aspect, but also the "ruin your night vision" aspect. Most pedestrians don't carry lights around, or even wear light-colored clothing at night.

Tesla screens switch to dark mode at night.

All screens (that aren't OLED ones, which aren't generally suitable for cars due to their shorter lifespan) still glow when displaying black.

So it's still a glowing thing in your field of vision. Of course, you're already going to be flash-blinded by retards leaving their LED high-beams on as they pass you, so maybe none of this matters.