These are the issues they're worried about? None of the numbers I saw while scanning look particularly worrying, and I doubt there's ever been a country on the face of this planet for which you wouldn't have been able to produce a similar list of issues of this magnitude - including past Norway.
They're worth paying attention to, but not sounding the alarm bells over.
That's because there is a default bad assumption that because they are so wealthy that no problems should exist, similar to how very rich people are seen. Looking at other wealthy petro-states (and people) around the world, that's clearly not true.
But relatively speaking I don't think there's a country that wouldn't trade most of their problems for Norway's, with the possible exception of their aging population.
The Nordic petro states were never really that impressive to me personally. I'm sure someone will come out of the woodwork to talk up their healthcare and social services, but again, if you were being fair we would compare them to a State like Massachusetts instead of Mississippi or Alabama and you would find our healthcare systems here are equally if not more accessible.