Starlink satellites are vulnerable to repeated uplink transmitting their preamble code (which is public and the same across any user terminal). The satellites are so tuned to that code you can jam them through their receive sidelobes.. taking out all beams on the satellite.

Won't you need n jammers = n satellites in view for this? I haven't seen anyone commit to investing in this.

A single omnidirectional transmitter on the ground can transmit this one preamble code in all directions and it jams all satellites in view. All Starlink satellites use the same uplink code and they can't change it because it's how new terminals enter the network.

You could use a phased array to target each of them rapidly