That boat has sailed some time ago - you don't need to destroy something that's guaranteed it won't be used for decades probably, if ever again.
No country in the West will do any trade with Russia under Putin. There's simply no turning back when you throw diplomacy and international laws out the window, and hide under nuclear threat.
In my point of view this was clearly a message that ANY gas that passes through that sea might have the same faith - even in NATO territory.
It wasn't by chance that it happened the same day a new gas pipe was opened between Norway and Poland: https://www.euronews.com/2022/09/27/baltic-pipe-norway-polan...
Not to mention that if anyone wants to PUSH GAS PRICES UP, this is a great way to spread panic in the markets "oh no!!! that door wont open again!!!".
I only see positives to Russia in this event, not a single positive for anyone else.