My favorite conspiracy theory is that Starlink is actually an ICBM defense system. With enough low earth orbit satellites with high power lasers on board, traveling in the right direction, they should be able to destroy the ICBM's at apogee. Since the satellites are already LEO, the missiles at apogee won't have that much difference in velocity, they just need to be traveling in a roughly similar orbit. As I recall, those long distance sub-orbital flights are just shy of the same delta-V as full LEO. Of course, space is a big place, and the satellites will need to do orbital correction to provide an intercept close enough to get within laser range.