Norway is a strange example to use, given that it's a place where plenty of affirmative action has taken place. Multiple parties have mandated 40% quotas for females and have done for decades, there are similar laws at board level, and parties alternate their party-lists male-female to ensure better representation. It's therefore unsurprising that a state which has actively promoted the representation of women for so long now has a politics where it feels perfectly natural and unforced for women to hold power.
Which isn't even what that original tweet was! It was normative, not prescriptive. Promoting something as worth achieving, without any actual policy attached to it. Which is why I've been bemused by the reaction to it. If I could criticise anything about it, it would be that it's empty words with no solution.
What can be done? It's a good question. Open primaries for individual seats in the US means you can't just select more women for a list and have them well up the order as in Norway, and you can't enforce all-women shortlists for seats as done by Labour in the UK. The only real method is patronage in the form of endorsements and funding, which, as we saw a little over a year ago, can go Badly.
If I was being glib I'd say maybe really all they can do is tweet? But apparently even that will get a backlash.