The link estimates the surface of the panels to be 30m2. Since the panels are 3.1m wide the length would be 9.6 meters. But even at 30 meters it would be very v

The link estimates the surface of the panels to be 30m2. Since the panels are 3.1m wide the length would be 9.6 meters. But even at 30 meters it would be very very hard to engineer a system that can keep a laser beam aligned on a moving target with sub microradian precision. I'd guess Starlink laser are more divergent to make hitting the target easier. Keeps the exit pupil a manageable size too (narrower beams need bigger optics).