The german government and institutions were (are?) full of pro gas (pro russian/russian tied) people who spend decades in the government before bouncing of to russia to work for petro companies. It's hard enough when you try, so imagine how hard it is if you don't even try
> Gerhard Schröder, who served as Chancellor of Germany from 1998 to 2005, has worked extensively for Russian state-owned energy companies since leaving office.
It just turned out that they weren't careful enough, so now they have got a giant nuclear waste storage pit which is unstable, is trying to leak into the groundwater, needs constant babysitting to prevent it from getting even worse, and will eventually need a nearly-impossible multi-billion-euro cleanup effort. At which point they'll be left with the original waste, plus a large amount of contaminated salt mine material, sitting above ground right where it started.
I reckon they would rather not want a repeat of this.
2. It was an old mine turned into a research mine. It was never intended for actual use.
3. The waste there is mostly medical and low-level other waste like gloves.
4. It is actually safe where it is, moving it is another giant waste of time and money whose sole intent is to stoke fear and create costs.
[0]: https://web.archive.org/web/20140118011319/http://www.haz.de...
Most of the waste in asse is from medical and research sectors