The only way to block line of sight is to erect a wall in the middle of the road so I'm not sure what you want. Pointing the lights is a tradeoff between seeing in front of you and shining the light on other people who are in front of you.

There's no reason matrix headlights can't block light for any reason, the Teslas and other ADAS systems see bikers and pedestrians so I don't see why that wouldn't be possible.