Easy: You need a service subscription to use Starlink. If you are paying for Starlink service after transferring it to Russia, yoo are complicit.

Yes, but that is very different than everyone in the upstream chain of custody being complicit.

if you know, or ought to reasonably know what it will be used for, you are contributing to armament of a foreign power, and international traffic in arms.

Reasonable does a lot of heavy lifting there. For most things, I dont think it is reasonable to be able to predict, track, and detect 2nd and 3rd order transfers.

Have you ever sold a used car? That could be in Russia right now for all you know.

That's just how it works, per Export Administration Regulation rules (see https://www.bis.gov/regulations ). You send something out of the country that's not designated EAR99 and it ends up in the wrong hands, they will^H^H^H^H can come down on you like a ton of bricks. It's a relatively-big hassle in the hardware business, with disproportionately high stakes.

Safe to say a Starlink receiver isn't EAR99.