There is at least one factual inaccuracy here--Nordstream 1 was not cut off after Russia's invasion of Ukraine. It was running at more or less usual capacity until early June, when the flow was cut by about 60%. It was then shut off in July for regular yearly maintenance window. It returned at 40% capacity for a while, before being slowed to 20% capacity in late July, and then shut off again at the end of August. So Nordstream 1 has only been not moving for a little less than a month at the time of the explosion.

While I think accidental failure of the Nordstream pipeline is an underrated explanation, such a glaring factual inaccuracy makes me skeptical of the viability of the specific theory espoused in this article.