Most of the Swedish public sector runs on Java. Problem is it's, like public infrastructure in general, more attractive to build than to maintain.

Doesn't matter what language you use if you don't actually maintain the software.

It matters at least a little. Ceteris parabus, I'd prefer unmaintained rust code over unmaintained java.

That said, I'd also prefer maintained java over unmaintained rust, so I do see your point.