There won't be any significant light pollution since the beams are so narrow. The problem of interference from clouds and precipitation is real, but the proble

There won't be any significant light pollution since the beams are so narrow. The problem of interference from clouds and precipitation is real, but the problem of physical occlusion probably isn't because the satellites move pretty fast. That would make it hard to persistently block the beam unless you have something as big as a storm cloud.