How do quickly can those lasers be repositioned and fire? Couldn't China just launch a ton of these from many locations and let those disperse further, and make

How do quickly can those lasers be repositioned and fire? Couldn't China just launch a ton of these from many locations and let those disperse further, and make them extremely reflective in the relevant wavelengths? Also, not sure if a few small-ish holes would actually bring one of these down, they don't have a big pressure differential at altitude.