This story isn't new, and hasn't gotten any more believable in the meantime. So Russia had ships in the baltic sea, where they travel all the time, close to a multi-billion pipeline THEY own.
Russia had no realistic motive to blow up their own pipeline. If Russia was going to blow up a pipeline, they'd have blown up the Norwegian pipeline that opened - surprise! - one day after Nordstream was blown up.
So the US and Norway profit from Russia's pipeline being blown up. Russia asks the UN for an independent investigation of the terrorist act, and the US blocks it. But you're still going to say that Russia is likely culprit? That is intellectually insulting.