The article doesn't really want to explain the media frenzy: It's a campaign by right-wing press, which has unfortunately so far been extremely successful at anchoring lies in people's heads. And it's needlessly giving a platform to demagogue Hans-Werner Sinn again.
Why doesn't even the far right want to reduce dependence on fuel imports from other countries? I thought fascists were all for "autarky" and depending on nobody else...
Surprisingly no. As far as they're concerned, fossil oil/gas is the fundamental building block of German economy and the economy is the single defining feature of Germany.
The actual far right here (i.e. the AfD) is quite literally part-financed by Russia. The left party (Linke) is also massively influenced by Russia. The center-right/liberal parties (CDU/CSU/FDP) tend to have financial ties to legacy industrial companies like BASF which is also a significant importer of fossil gas. The social democrats (SPD) likewise have industry connections, though maybe not quite as strong. The most relevant right-wing newspaper publisher, Axel Springer, is part-owned by KKR, an investor with significant fossil-fuel ties.
(Also, note that I didn't just say "far right". It's the entire right wing.)