Not inconsistent at all. Germany depends on Russia for more than 50% of its natural gas supply. Shutting it off immediately without any alternate supply and the lack of infrastructure to accept supplies from other sources would devastate the German economy, the largest in Europe. Domestically, the political blowback would be unacceptable to the current leadership. And there would be a ripple effect throughout Europe.
It will take years to wean Germany off of Russian natural gas. That is called reality.
They are moving to reduce reliance on Russian gas but if they did it immediately overnight as you suggest it would absolute destroy their economies. So you are totally surprised and perplexed that they don’t destroy their economy.
That 'unwillingness to destroy their economy' didn't stop Germany from icing certification on the Nord Stream 2 project back in February.
The fact that Europeans will take years to wean off of Russian gas is not the perplexing point: rather, that they apparently expected no debilitating consequences from either sanctioning Russia (the source of the gas in question) or continuing to pay for transit of Russian gas through Ukraine (when said payments fund the same belligerent they want Ukraine to defeat).