The destruction of Northstream 2 had no effect at all on the energy supply to Germany. The remaining capacity to Russia was never used over 50%, if that. Considering Russia intentionally drove up prices in the months leading up to the invasion and even rented storage capacity to keep it empty to better blackmail, there never was a sane argument for keeping the gas imports from Russia going.

Limiting supply is limiting bargaining power, you will always end up with better deal even having worse alternative option. As a buyer you want as much supply as possible.