Why not ban pencils? You can draw maps or schematics of secret things, plus they can be used to stab people!
There are many more reasons LiDAR kicks ass but none of them have anything to do with why they are doing this.
You should do some more research into structure-from-motion and get back to us. Lidar is nice for real-time data, but these days anyone can process a 4k stream and get excellent geometry data.
If a hypothetical hostile and weaponized drone is later deployed with a pretrained navigational model, it might have 4k and/or LIDAR whose function would be to verify rather than figure out navigation; in a state of hostility we can assume the owners of the drone would be indifferent to local rules.
Will America's foes heinously attack the homeland by offering socialistic self-driving vehicles? What exactly the threat model here, that makes Lidar data dangerous? Space-based remote sensing is superior in almost every way.
Before we had these, wind farms used to have to poach cell phone tower guys to climb up every single one. Had a neighbor who did this, it pays insanely well but my palms sweat just thinking about it.