It is Russia, they have their ways.
Nobody believes in their 'repairs' and temporary issues with the pipeline. I really hope it is destroyed.
If they wanted they could reuse the old pipeline that is on land on Polish territory.
BTW. It is not only my suspicion: https://www.politico.com/news/2022/09/28/nord-stream-pipelin...
With the closed valve, they have an upper hand at negotiations about gas, especially if the german people get cold and start sharpening the pitchforks for their own (german) politicians... now, even if the germans want to negotiate, there will be no gas until the pipelines are fixed, and it doesn't seem that will happen soon