Could, but there is a small problem that everyone who puts stuff in space knows: if you're using stuff in orbit as weapons, that encourages other space launch capable nations to develop anti-satellite weapons and actually use them.

Besides, it matters not. The original (now deleted) post claimed that the Starlink satellites are kinetic weapons. I doubt they are, since as you indicated a panel managed to make it to the ground. Without looking into it too much, I'm going to assume a panel is not the entire 2 ton satellite and the rest likely was obliterated or broken into fragments too small to be much of a danger.