The author did a good job giving us the background and in exploring the implications of this. The two primary thoughts that struck me are that if an amateur home brewer observed this obvious activity, it is highly probable national states who explicitly seek out and monitor what clandestine spy satellites do are well aware of it.
To be fair though, Tilley strikes me as somebody with a lot more expertise and investment than just an 'amateur home brewer'. Like, widespread deployment of Starshield began in 2023? 2024? So far, the only "public" response to this has originated with him.
Discussions of ethics of disclosure aside, if this really was causing issues, you would figure somebody actively using the spectrum outside the U.S. would have screamed by now.
