* If the story is false, it's irresponsible because it causes severe monetary and reputational damage to companies that do not deserve it (e.g. Supermicro's stock is still down ~ 40%).
* If the story is true, it's a MAJOR breach of classified information from US intelligence operations; operations which I assume (without evidence to the contrary) are operating in good faith -- in the interest of the US and its citizens. Breaching classified information of such ongoing investigations to trace supply chains of spy chips could very well compromise those investigations (which would be irresponsible to risk).
So either way, it's irresponsible IMO.
P.S. IMO you cannot justify leaking this kind of info by comparing to Snowden, for example, because Snowden was a whistle-blower revealing information about operations that compromised citizens rights, which even congress was lied to about.