Nord Stream 2 is (politically) dead in Germany, reviving it is a total fringe position in German politics. And: Putin doesn’t currently deliver any gas through it or Nord Stream 1 anyway. Gas storage in Germany is still filling up, gas prices are going down and it looks like getting through this winter will be tough but it also looks like there will be no dramatic gas shortage in Germany. And all indications are that while things are though, it seems as though there is enough flexibility to move away from Russion gas and that has, if anything, only accelerated. I more or less expect things to become easier as time goes by, not harder, with this winter now looking to be only a bump in that road.

In that current favorable climate for anyone whose political goal it is that Germany does not rely on Russian gas I see no strategic value at all in sabotaging Nord Stream 1 or 2.

You don’t need to blow up Nord Stream 2 if the position of the German government and the largest opposition party is to not move forward with Nord Stream 2 anyway. That would only seem to unnecessarily complicate things (and sabotage can only ever really delay things, better to actually also have the political will align with your own).