Right, in my experience it's a distinction that's offensive to the "Northern" camp that thinks about the disparity in terms of each country's independent "growth"/"progress"/development". It also offends "would-be Northerners", i.e. comprador/petty bourgeois individuals located geographically in the "South", for similar reasons. To complicate matters, dependency theorists were themselves petty bourgeois apologists of the Non-Aligned Movement. It's just that times have changed, just like how "American Indian" is preferred by the older generation because "Native" and "Indigenous" are impositions of liberalism, even though the newer generation may prefer the latter labels.

Personally I don't care what language is being used as long as the real conditions are being brought to light. Persecutory investigations into psychology on these matters are dead ends. The successful adoption of "Native" and "developing" did not liberate.