Earlier quoted context omitted.
The US was always opposed to Nord Stream and for good reasons. I'm in fact glad it's gone. Many people already speculated it was the US, because Biden himself literally says "we will bring an end to it": https://m.youtube.com/watch?v=OS4O8rGRLf8 With a smirk. Even when pressed how he is going to do it. For me, Hersh' story is the secondary corroboration.
Seems to me equally likely he's saying they'd pressure Germany to not use it or introduce sanctions (to bring an end to Nordstream 2, as a source of foreign currency for Russia and as leverage over the EU). Additionally wasn't Nordstream 2 not yet operational, and mostly Nordstream 1 that was sabotaged?
Up to that point, the Russians clearly communicated to Germany that the flow of gas could be resumed either by dropping the sanctions to "repair" Nord Stream 1 or by opening Nord Stream 2.
The reason given by the Russians as to why Nord Stream 1 wasn't running at capacity was technical problems. First it was a turbine which eventually was replaced by Germany. Next it was allegedly damage to a control unit. The Russians claimed the repairs were impossible because of the sanctions.
So up until the bombing, Nord Stream 2 was always there as a possible fallback. Had Germany run into difficulties procuring gas from other sources up until winter, there was this dangling bait in reach of the German government. A freezing population would have been very unkind to a government that refused to open the second pipeline just for political stance.
Since the bombing it has become clear that operating any pipeline through the Baltic might only last for a short time.