To get back to the actual subject of this type of "warfare", I do have some concerns about the kessler syndrome, even when the attack is non-kinetic. Considering how many Starlink satellites there will be in the final constellation, and how often they already have to maneuver to avoid each other by the prescribed distance, it seems that just disabling a bunch of these satellites would prevent their mutual coordinated collision avoidance and lead to a cascade of collisions. Add to Starlink similar "constellations" of satellites by Russia, China, India and probably others, and coordination is going to become extremely crucial. If a couple of countries start disabling each others' constellations, I think the kessler effect is likely.
Of course, that might end up in the same situation as nuclear warheads - nobody uses them, but everybody needs to have them so that nobody uses them.