As i said, G2a was spread from Asia minor to Greece/Macedonia during Hellenic times... that is uniform colour on Maciamo's map showing lower frequencies there... in addition, the area where hotspot is was few centuries ago settled by Turks... among those culturally and linguistically Turkish people, many have pre-Turkic roots, as it is the case in whole Turkey (see distribution of G2a there)...Yes G2a is for a long time in Anatolia so you think that the Turks moved them in this era of Greece after the fall of Constantinople just 500 years ago ? and it is sufficient to see this hot spot ? I don't think so because there are many G2a3a in the FTDNA project who come from a Macedonian origin and who are not Turks .
adding this layer on top of layer with spread of G2a same as in the rest of Greece did increase frequencies of G2a...
if Ancient Macedonians were dominantly G2a we would for sure see stronger spread of G2a in original position of ancient Macedonia state
but there it is same as in the rest of Greece... in fact, if you look carefully, hotspot of G2a falls more into Thessaly area that was out of Ancient Macedonia