Disrupting the signal for a normal-sized aircraft is much harder. If you're flying at 10s of thousands of feet and have a line of sight to multiple satellites it's going to take some serious weaponry to disrupt that.
The G forces are another thing. I wonder why they aren't stsrting wth missle platforms instead.
Sure, winged flight has uses, but taking a missle platform, adding small munitions instead of a big bang?
Price and ease of manufacture. Missiles are expensive and hard to build.
Regarding your missile platform question, there are several companies that already manufacturing loitering munitions, and long-range loitering cruise missiles are on the roadmap, so to speak.
Of course any planned action would likely try to strike first, by some means.
In practice I think this would look something like immediate launch of satellite interceptor spacecraft after a formal war kicks off, so the clock in this case is probably measured in days. If we already have these kinds of interceptors, and I think there's good reason to believe that the Americans have at least a few, then the clock probably has only 48-72 hours after launch on it before the enemy satellite network starts to see noticeable degradation. Returning this point to the original comment of mine in this thread, you would likely have only a few days to a week where you could continuously "pilot" these kinds of aircraft with a human operator before you'd need a fully autonomous system to at least supplement if not fully replace decision-making. Hope that makes sense, first time I've actually thought through how I would plan this if I was doing so in real life. I'm making a ton of assumptions here ... one of which is that the Americans, in this hypothetical, would have a highly accurate map of enemy satellite networks and their orbits (there's good reason to think this is true). Another is that the interceptor spacecraft are a) available (defined as either already in orbit or able to be quickly mated with a launch rocket), b) numerous enough that they can make an impact on a time horizon that matters, and c) that the enemy lacks the means to either intercept the interceptor spacecraft or maneuver their own satellites to make the interception itself difficult (or impossible, if you get the interceptor to burn enough DV that it can't continue mission).
I'd hate to be part of the clean-up crew when that war ends. Broken fibre is nasty stuff.
So a drone boat with good/secure signalling pulls up and a bunch of fibre optic drones launch from that point penetrating inland.