A layman who is not familiar with the reasons behind Global North/South would not think about imperialist relations. I'm somewhat okay with "developing" because the term is easier to understand: some countries are less developed than others. Plus the terms are fluid. If a country becomes developed enough then they switch labels.
Global North/South makes no sense at all, again from a layman's perspective. From the original story:
> Psychologically, we tend to view things nearer the top as ‘good’ and those lower as ‘bad.’
When I see Australia in the southern hemisphere being characterised as "North", I think that the creator of this term is discriminating against countries they consider inferior. There is no room for growth here. A country being characterised as "South" will always be as such, because intuitively we know we can't switch geographies.