To be very sure that they are never turned on again
Whether or not it's worth the risk of the blowback is a calculation that I can't make.
But European and very specifically German dependence on those pipes tilted the world in the last 5 years. One of the few things I ever agreed with Trump on.
So while they were being wound down in theory, the reality is someone could make a decision and flip a switch and all the sudden all the influence is back. I could very easily see someone making a decision to make sure that did not happen again.