And because if it had been a government push, it would have been accompanied by a government PR push on other fronts. But I saw no evidence the government picked up this story in particular, or even hardly referenced it. Being now months later we can also observe the government has not lifted a finger to substantiate this storyline or pull Bloomberg's bacon out of the increasingly hot fire.
The theory that this was government-pushed falls down on the ground that even if the government or some aspect of it wanted to push this narrative, this is not even remotely their best choice on how to do it.
https://www.servethehome.com/investigating-implausible-bloom...
Basic informational hygiene is that the claim is garbage until proven otherwise, "credibility" notwithstanding. There is not only not a single positive reason to believe this story, there is mounting evidence that it should not be believed.
Seriously, though, it seems that your idea of "basic informational hygiene" conflicts with a basic security posture in this case. We don't have to assume Super Micro has never been hacked, so I don't know why we would assume that. More in keeping with the topic of this thread, we don't have to assume the State Department (or whoever) has never caused a story to be published or discredited, so I don't know why we would assume that.
We're on the internet, a medium in which information can be trivially exchanged. Easily-defeated heuristics like "authority" and "credibility" are meaningless, if not harmful, when individual claims can (and should!) be evaluated on their own merits.
Basic security posture, sure, but nobody's arguing that we should change that and pretend that Supermicro is completely safe. Nothing is ever completely safe.
..but we're talking about a very specific claim which already has a number of gaping holes blown into it.