I do wonder what the shelf life of those things are? Germany could hand over 200 - 300 of those things and just order new one to replace the oldest one in their stockpile.
In general, Germany is not especially keen to enter into conflicts with Russia. They are a long time economic and energy partner. It is why Germany has a history of thwarting EU energy security and solidarity, and why it dragged its feet w.r.t. early in this conflict.
Energy security like from the US? Germany spending billions to switch to US LNG as fast as possible just to be gut punched. Russia delivered gas without problems for 50+ years, the US is not able to deliver LNG reliably for 1 year:
"The U.S. has become the biggest exporter of LNG to Europe [..] U.S. President Joe Biden last week paused approvals for applications to export from new LNG projects to review the climate change and economic impact of such projects." [0]
The only energy the EU can really control is solar, but probably has not enough room for panels to replace LNG with green hydrogen.
Parts of the German government party SPD are long term friends of Putin and need to be dragged by their feet for every inch of the way. At least the chancellor changed course - luckily otherwise there would be no support at all. But he is still fighting a fraction in his party of Putin friends - there is a "governor" of the government party SPD in power who took money from Putin.
Wish Germany would send long range Taurus.