I wonder is it how the Zoe is viewed.
In most of Europe, I think it's viewed as the only Electric car that's competitive on price against Internal Combusion cars. For a bit more, an eco conscious person can get city car with good range.
In Norway, where as I understand all IC cars now are luxury cars due the taxation, the Zoe is just one of many EVs to choose from.
If it was me, I'd choose a Kona or a e-Niro over a Zoe, but I cant afford them (If they were even ever in stock).
At Kona e-Niro prices... in my country... I'd choose a sporty semi-luxury car...
Maybe Zoe is just in that Niche in countries that aren't (yet) heavily taxing IC cars.
But it's probably about the cold weather performance. Other cars charge faster, and that's important (even psychologically) in Winter. Other cars are also more efficient per km, so you're getting hammered by both in Winter - A car that uses a lot of kw/h per km in good weather does even worse in snow/slush and wind, and then leave you at the charger for longer!
The orignally Zoe and ZE40 models weren't great either, I think they lacked heat pumps too (even worse cold weather performance!), but while I'm only seeing Renault heavily push the Zoe to regular folks now, maybe the Zoe brand name has already been tarnished in Norway?