Doesn't really matter. Kogan is distributing binaries that contain GPL code. If there's a contracted hardware/software manufacturer involved they're also responsible but Kogan still has to do a lot on their end. They must be having one of those "what the hell are we even doing moments" since they control so little of the process behind their business model.
If Kogan is just putting their name on it, they have to ask that manufacturer (which I assume is foreign) to provide the source for the software involved. Out of matters of sheer practicality and perceived language barriers, Kogan would then share these sources with the English-speaking world. The manufacturer could do this themselves, but whatever.
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