... and, for what it's worth, a climbing rocket, which is also moving away from the observer, whether viewed on a flat or globe earth, will ALWAYS look as though it is descending toward the ground at some point in its upward trajectory. Geometry called, and it said so.
In the case of launches Eastward from Cape Canaveral, where the rocket always moves out to sea, away from land-based observers, this is always the viewpoint.
It's unclear what the viewpoint on this Astra one was.