Just so I understand, you're alleging that a U.S. agency was, among other things, submitting patches for a mainland Chinese home-grown CPU architecture (Loongson)?
No, they're not. They are saying that due to the extraordinary circumstances with this case US agencies cannot be excluded from suspicion. At this time no actor seems to be a more likely perpetrator than the next. (Keep in mind that false-flag operations are a very common occurrence in cyber warfare and this cannot be ruled out yet.)
And if someone wanted to attack a target running on Loongson, they would certainly have to make sure the code can actually run there in the first place.
It doesn't seem out of the question that the U.S. or allied nations might want to be involved in the development effort around these CPUs. Even if initially it's just to build some credibility for this account so future adversarial patches are accepted with less suspicion? If you think that's implausible, I'm interested why?
