I am interested in the impact of decolonialism on language change. Some former colonial countries like Singaplore are using particular new medical terms in hospitals rather than the usual terms commonly employed in other countries.
If I understood the question well, does linguistic colonization disappear with military and political decolonization? I think the world is seeing a form of cultural colonization where language is playing a crucial role as a vehicle of foreign cultures. Some of this was ushered with the advent of "globalization," which is nothing but the imperialism of a dominant culture and language, namely, the Anglo-American culture and the various varieties of English. Depending on individual countries, what you call linguistic decolonialism is never total. In spite of hostilities to this culture and language, many countries show paradoxically more immersion in this culture and language (e.g., most of the Arab countries, and even countries such as Iran, North Korea, and most Latin American countries.