Earlier quoted context omitted.
Would there be a necessity to get close to a satellite to destroy it? Some sort of rocket could be launched from quite far away without needing much fuel if it was already in a similar orbit.
No need for such a complex solution, the Chinese just launch a missile from the ground: https://en.m.wikipedia.org/wiki/2007_Chinese_anti-satellite_...
If you can get close to a satellite however, you can take photo's from up close or from arbitrary angles. Spy agencies might be very interested in this. You could conceivably also put in inside your cargo bay and bring it back to the surface for 'disassembly', though its owners would probably be unhappy about that.