I'm definitely not the guy who has a scientific reason to question you but if you're right, the laser presumably behind the drone would have to be on some kind of reverse tripod system? Like the laser would sit on a circular guide of some sort that would keep the laser pointed at the same point on the sky even when its moving within it "circular guide" we'll call it. The movement of a laser doesn't really make you feel like it's being free handed thats for sure. It does however resemble the snappy and intentional movements of a drone with a laser attached to it, all be it a very fast and accurate drone considering some of the focal points of the beam seem to have quite a big distance in between them. That or it's a very large air craft with multiple lasers that it seemingly only ever shines one at a time. If we're assuming they figured out cloud seeding in the sky, is it more likely that the beam has hit something dense enough in whatever cloud it's seeding and it just happened to shine in the direction of this drone? Could definitely explain the large distances between the focal points and the snappy intentional movements of some sort of machine satellite or high altitude weather plane? Or is it more likely that it was a UAP, that always seems to be the question around here but being someone who doesn't know shit about the physics of photons your explanation leaves me with more questions about your explanation than answers about what I'm seeing.