Q: Why does this article only include "minority" ethnic groups?
A: Because we apply the definition of "indigenous peoples" used by international legislation by the UN, UNESCO, the ILO and the WTO, which applies to those ethnic groups that were indigenous to a territory prior to being incorporated into a national state, and who are politically and culturally separate from the majority ethnic identity of the state of which they are a part.
Q: Why does this article not include European ethno-national groups such as the Irish, French, Georgians, etc.? They are also indigenous to their countries.
A: Yes, they are indigenous to their countries and territories, but they are not indigenous peoples under the definition used by international legislation described above. The reason this definition is useful is that under a broader definition of "indigenous" simply as "native to a territory", the definition would include all peoples and ethnic groups, because all groups are indigenous to somewhere. The article would then have the same scope as an article on the ethnic groups of the world and it would be redundant as a separate article. Furthermore, literature on indigenous peoples always applies a definition similar to that used in international legislation, precisely because otherwise it would simply be an article about human political, cultural and migrational history; that is another topic. This is the RfC in which the inclusion criteria were decided by broad consensus.