The former Polish defence minister tweeted (in a now-deleted Tweet) "Thanks, America" in response to the news. However, the helicopters being based in Gdansk doesn't mean that there was Polish cooperation. This Deutsche Welle "fact check" (also obviously biased, leading) article refutes the notion that the helicopter evidence is valid, as it didn't quite fly over the correct spots:Its interesting and disturbing that Sachs would mention possible Polish involvement with the US in destroying the pipelines...I've heard about the US helicopters but that video was the first time I've heard mention of Poland’s possible involvement...What would the EU do with Poland if its proven?...
Sabotage is believed to be the likely cause of the leaks in the Nord Stream 1 and 2 pipelines. Pro-Russian voices claim a US helicopter may have carried out the attack. DW takes a look at those claims.
There was no need either to use a helicopter to sabotage the pipelines, and it makes it a bit obvious if they were used. The DW quotes the EU's foreign policy chief Josep Borrell, which is an interesting coincidence, because a special adviser to Josep Borrell is none other than Jeffrey Sachs.
I think the idea that the US sabotaged the Nord Steam pipelines is rather like the idea that the Wuhan Covid outbreak originated with a Chinese lab leak. Plausible, but much too inconvenient if it were ever proven to be true, as it would up-end the whole global order, and add chaos on top of more chaos. Another interesting coincidence is that the chair of the Lancet's Covid comission which recently reported that a lab leak is a plausible origin of the SARS-CoV-2 outbreak is also Jeffrey Sachs.