The only point I'd push back on is that this was only in US interests. Ukraine makes a decent sum allowing Nord 1 to transit over land in their territory, money they would lose with the activation of Nord 2.

Further, regardless of whom you believe committed the act, there is evidence to suggest the targeting of Nord 1 was accidental and the actual intent was to just hit Nord 2.

You could even speculate the destruction of Nord 2 was insurance that the west wouldn't abandon Ukraine since they could no longer flip a switch and take them out of the gas equation.