« Remember: it was Russia which tried to blackmail Germany by shutting down the pipelines » — I do not remember. I've never heard of that. What I do remember is there was maintenance work being carried out, for which gas flow had to be reduced; some said it was routine work, others pretended there was a political motivation. There were also unprecedented and illegal seizures of Russian assets before that.
« the Ukrainians settled the matter » — This is the yacht story, which I think you're too smart to honestly fall for. The decision to carry out an act of sabotage that constitutes a casus belli was taken in London or Washington (whomever you give precedence in this matter). Biden loudly and openly bragged about "putting an end to it" on February 7, 2022 in the White House, in presence of Scholz. And US companies stood to profit from it, as did "Nine Eyes" members Norway and the Netherlands.
There was no need for any Ukrainians to be involved in any way. The story is seized upon in Germany to deflect from an embarrasing and discomforting reality:
Germany's alleged friends aren't, and Germany's leadership has been collaborating with them against Germany's national interest and continues to do so. And while I don't know whether there was blackmail involved I do know that there was terrorism involved (the GermanWings crash on 3/24/15, ridiculously blamed on "pilot suicide").
Lol, ok wacko... whatever you say.
To return the "compliment", consider whether it rather applies here … 49386949. And remember to "flag".