This poorly written Wiki article attempts to make it appear that ancient Macedonians were distinct from ancient Greeks. I would gambit the article is largely edited by people from Fyrom/Republic of Macedonia with irredentist aims towards Greece (contrary to both US and UN resolutions to refrain from propaganda against Greek Macedonians). Despite the occasional voice of objections there is no major dispute among most scholars that ancient Macedon was inherently Greek in nature. (at least more than anything else) The Hellenic age (the greek word for what we in english call "greek") is evidence beyond dispute of this.

 To give an example of historical distortions found in this article...

"Macedon or Macedonia (Greek Μακεδονία Makedonía) was the name of a kingdom centered in the northern-most part of ancient Greece, bordered by the kingdom of Epirus to the west and the region of Thrace to the east."

By saying the "northern-most part of Greece" it makes it seem like it bordered Greece. There was no "Greece" state in ancient times... there was only a collection of autonomous city states and Kingdoms that self-identified as Greeks. (Mycenae, Athens, Argos, Ithica, Sparta, Macedon Corinth, etc...) 

Another example of irredentism.... the wiki article states....

"It became increasingly Atticised during this period, though prominent Athenians appear to have regarded the Macedonians as uncouth[3].

 This statement is very deceptive. It was common during times of conflict for Greeks to label each other "barbarians" (non-greeks) as an insult. (similar to saying "unAmerican" today) 

 While Demosthenes used "barbarians" to describe Macedonians... he also used it describe the Athenean orator Aristogeiton [Aristophanes, ‘Nephelae’ (line 491). And even Demosthenes himself as described by as a "barbarian" by Aeschine. Plato characterized the Lesbian Aeolic Greek dialect as ‘a barbarian register’ while addressing Pittakos of Mytilene. Athenaios VIII 350a  Socrates calls Strepsiadis “ανθρωπός αμαθές ουτώσι και βάρβαρος“.  (Strepsiadis…was a well-known Athenian) - Protagoras 3410 etc... etc... There are countless instances of Greeks describing each other as barbarians.

  There are other examples of bias in the article but the most telling is how it lightly brushs over the Hellenic period of Macedon (similiar to the golden age of Athens).... in which Macedonia spread the Greek Language, Greek culture, and Greek ideas to the region. They unique flavour of macedon among Greeks... was very similar to how Athens also had unique aspects to it... as did Sparta... as did most of the Greek mini-states.

 If Macedon wasn't Greek.... then Greek philosopher Aristotle wasn't Greek either (since he came from Chalcidice in Macedon). To go down this road we would also need to rewrite a fair portion of Wiki articles related to antiquity and the Hellenistic period. To do this to suit the political needs of a country whose population is roughly a quarter Muslim and most of the rest are ethnically slavic (who have called themselves Yugoslavians, Serbians, and Bulgarians in the last hundred years) amounts to roughly helping the Taliban blow up Buddhist statues for political ends. 

 Because of political nature of the article I would advise a complete rewrite by people will credentials in ancient studies. History is not a popularity contest. Just stick to the facts as we know them.  What's ironic is that virtually every last piece of "evidence" that Macedon wasn't Greek... is either translated from Greek or comes from Greek artifacts. The citizens of Fyrom can't even read inscriptions from Macedon... as they are almost all writen in Greek. (Their own "Macedonian" language was called Bulgarian less than a hundred years ago)