SpaceX knows exactly where each terminal is because they have to for radio timing to work correctly with the moving satellites. Russia has to test those terminals somewhere. SpaceX could be giving that location to Ukraine. SpaceX could be permanently destroying any terminal that turns up near there and hasn't been cleared by Ukraine. SpaceX could be reporting the incoming locations of missiles and could be cutting service as soon as they realize that there's a surprise terminal moving rapidly towards a Ukrainian city.
Due to their lack of accuracy which makes them ineffective against hardened military targets, most of the Russian missiles are used in strict terror campaigns against civilian buildings: Power stations providing neighborhood heating, residential tower blocks with hundreds of families living in them, independent churches, nurseries often at times of maximum use and of course hospitals.
Getting on top of this and ensuring that Ukraine is a key supported customer that feels it gets what it needs could have allowed a real feel good story showing a company that took abuse and murder seriously. In fact it's pretty clear that some working at Starlink tried to do that at times and the management made it more difficult. Elon Musk is literally a baby killer.