Yup, and I think this could be improved further by using even lower orbits. Improves latency, debris, and reduces visible time (i.e. closer and closer to only visible during twilight... plus the closer distance increases apparent angular speed and thus reduces dwell time per pixel) for ground telescopes. Requires a bigger propulsive burden, but this is worth it, IMHO.

And launching to lower orbits means higher payload to orbit per launch which means they can launch more of their constellation per launch. (Although they probably a larger constellation at those orbits just due to how short the orbital periods are.)