I like how you believe US cold war propaganda that Tito somehow created FYR Macedonian ethnicity. I do not know of any other state in history who manufactured ethnic consciousness, on top of that within 30-40 year span. Soviets tried crating a Soviet man, did not really work out for them all that much.
Not Tito per se, but communist leaders of Yugoslavia in 1944 in WW2. Which was good tactical move for them at that point of time, in fact great one. They made distinction between nazi-Bulgars, and pro-Yugoslav almost-Bulgars, they paved the road for "drang nach suden", they installed buffer between nazi-Albanians and Nazi-Bulgarians.
Pretty smart huh? With grave consequences of course. Instant nationalities needs instant myths and identity thefts, but they destined to get continual opposition from the victims of theft attempt.
I would know. What Soviets failed, NATO continued, thus first there was a imposed administration (Bosnia), then came the people who named themselves (in 1993) after imposed administration, and named the language (in 1995) of their Serb ancestors after imposed administration. So, by pushing for this NATO for instance paved the road for creation of Austrian/Australian/American/Brazilian/Sovietian/Yugoslavian language, something Yugoslav communists couldn't do, nor even good old democrat Stalin
So, yes, attempts of identity thefts are not that uncommon and when they supported by "mysterious" geo-political forces (like in case of Bosnia or Kosovo) they undergo bellow the radar. Unlike Greece-FYROM issue.
Yet, all these cases of instant history creations and identity thefts have one thing in common - history chews them up and spits them out uglier then they were before. Just like it did in Bosnia after the Turkish nation gerrymandering, then after the Austrian game of artificial nation creation, the same is destined for the newest NATO instant nations.
BTW, question for you, in FYROM there is like 30% of Albanians, they are also "Macedonians", right?
Why don't they claim Greek heroes and Greek names and history?