Even the scattered survivors of Alexander's expedition who still live in western Afghanistan are identified, both by the indigenous people and by themselves as Greeks without ambiguity. The confusion that exists today about the Greekness of the ancient Macedons is largely due to propaganda. Various people have taken ancient texts out of context in trying to prove that the Ancient Macedons were not Greek. Of course once the whole text comes to light, it becomes quite clear that the elders thought of the Macedons as nothing but Greeks. As a quick test try to spot a non Greek name among the names of the Kings of Macedonia Or alternatively you can read N.G.L. Hammond's interview on the subject.
History is the means for laying claims on foreign lands.
The ancient people inhabiting the area around Skopje, at the time of the ancient Macedonians, were the Dardanians, and their land was called Dardania. Ex-Yugoslavs will attest to that. After all we all identify as Macedonians. We are Greek. The latter can be found in the latest State Department report about the Slavic minority of Greece.