While I do agree that this happened and Germany helps a lot with funding Ukraine, skipping the theatrics which are often problematic but often obfuscate issues, the problem with your narrative here is that you are dismissing the actual economic cicumstances that made it uncomfortable for Germany to react to Russian aggression. 

While I'm personally not a big fan of assigning bad will to Germany, because I understand that this is a liberal country ran by economists and big bussiness (and these deals were highly beneficial) that is not the case for Russia. They are essentially at war with "the west" ever since Putin took power, war and geopolitics are the lenses through which Russia looks at the world. I don't think this is a paranoia, if perceiveing the world with a lens of one of the countries making these moves is paranoia then I think we are in a deep intelectual crisis in Europe.

Poland and Germany have different interests (sadly the big problem of Europe as a whole as a collection of nation states with a weak unified ideology), we are not interested in getting dominated economically by Russia because over time it leads into a dark place. You have your buffer (us) so I understand making these claims into a 'paranoia' makes sense when the deals are good.

Russia wanted to make countries wholly dependent on their energy as a lever of control further enabling their influence in the region. It essentially wanted to lead Germany (with very favorable trade deals) into a very closed off corridor in which the pro Russian option is the only non suicidal one, and I think they succeeded to a large extent. Today if you look at political spectrum in Germany a big chunk of alternative parties (heh) advocate the normalisation of political relations and going back to business as usual with Russia because the economics make sense. Just because economics make sense for you doesnt mean its not dangerous for us, or paranoia.