This isn't hard to achieve - I think a Starlink-guided drone army is pretty much unjammable - unless you have space based jammers, but once they get laser datalinks it will be 100% unjammable.
Highly directional antennas mean that the radiation source needs to be up in the sky to be even picked up by the drone.
Ground based jammers are physically not capable of doing this. And I'm pretty sure they use frequency bands that do not reflect off the ionosphere otherwise they couldn't talk to satellites.
Earth to satellite connection is as jammable as other wireless connection. And don't forget that gps sygnals are also jammed and replaced with fake location.
I have no idea how any of this actually works in practice, but I imagine a series of MEMS mirrors could split a single physical laser beam into many-many recievers in a time-multiplexed manner.
Probably you could control a good amount of drones with a single satellite transciever, and your typical drone would have LOS to many satellites.
There could be multiplexer drones whose purpose would be to mediate between cheap disposable small drones and the satellites themselves.
This is already a thing (not with lasers and sats) - the Russians have the Orlan drones with sophisticated(ish) surveillance equipment that act as spotters and guide the Lancet suicide drones and artillery
