You have answered your own question. Macedonia of ALEXANDER the Great has nothing to do with the territory of present day "Macedonia". They are different geographical entities. That's why this is fraud.
Imagine the sctipt: Cuban province Matanzas breaks out from Cuba, declared independence and call itself FLORIDA, using the Star Spnghled Banner and U.S. Coat of Arms as state symbols, claiming Jorge Washington was their president usurped by Americans and claiming Florida panhandle as their territory? Imagine Chicoms recognize Matanzas under name Florida.
How would State Department react?
They'd have a good chuckle, as would the rest of the US.