Starlink can see the packet traffic. They ought be able to analyze which dishes are on each side of the conflict. Even if it isn't perfectly accurate, a rough blacklist would help Ukraine tremendously (by hurting Russia). And if Ukraine complains about any that aren't working they can unblock those specifically.
> but also many individual dishes that were donated, and being paid for, by private individuals outside Ukraine.
And do you actually think you could get everyone to register their starlink, while fighting?
It's a logistical nightmare getting them all registered now.