UAVs like the Global Hawk or Triton aren't large enough to be fast enough to be useful against enemy fighters. As for StarLink, all relevant LEO satellites are

UAVs like the Global Hawk or Triton aren't large enough to be fast enough to be useful against enemy fighters. As for StarLink, all relevant LEO satellites are coming down in the early stages of any open combat between the US and a near-peer adversary. To contest air superiority requires a platform that goes very fast and can see very far. To fight enemy fighters or to strike ground targets in places without air superiority a stealth fighter large enough to be fast and to carry a long-range sensing and jamming suite is needed.