It worked quite well between France and Germany 50 years earlier.

Yes it was naive, given the philosophy of the leaders of the UdSSR/Russia, but I don't think it was that much problematic. We do need some years to adapt, but it doesn't meaningfully impact the ability to send weapons to the ukraine and impose sanctions (in the long term). Meanwhile we got cheap gas for some decades and Russia got some other trade partners beside China. Would we better of if we didn't use the oil in the first place? Then Russia would have bounded earlier only to China and Nordkorea, etc. . It also did have less environmental impact then shipping the oil from the US.