How come that Romans did NOT identify Epirots as Greeks?

[Arta]

Epirus-Cameria and Phyrros ,but how come that Romans didn't identify Epirots as Greeks? Why Greek historians tend to hellenize everything? The region of Epirus by most of the facts that ancient historians have given to us seems to be a non Greek region:

1)Thucydides In his book (Peloponnesian War) He describes the Barbarian Allies of the Peloponnesians.

"From the Hellenes there were the Ambraciots, Leucadians and 1000 Peloponnesian hoplites."

"From the Barbarians there were: 1000 Chaones witch had no King but 2 Prostates for 1 year Fotis and Nikanores. The Chaones are joint by Thesprotes wich have no King either. In the head of the Mollosians and the Atintanians was Sabylinthius, wich was the tutor of King Tharypa (yet still a child).There were also the Parauei with their King Oroides and 1000 Orestes."

2)"Skylaks" He writes around (370-360 b.c) A Geographic book.

He describes the People that lives in Adriatic and Ionian region.

"In The North Adriatic lives the tribe of the Liburnians,

"The middle and the South Adriatic sea Is Populated By Illyrians"

"The Ionian sea is devided Between Chaones and Thesprotes. between them The Mollosians have opened an exit to the sea which is (40 stadia = 8Km).""After Mollosia it comes Ambracia an Hellenic Polis, which is (80 stadia) away from the sea"

3)Plutarch-----------(Pyrrhus)------------

Pyrrhus was brought at the home of the Illyrian King Glaucias: "Thus being safe, and out of the reach of pursuit, they addressed themselves to Glaucias, then King of the Illyrians, and finding him sitting at home with his wife, they laid down the child before them."

He was raised as an Illyrian Prince:

"At present, therefore, he gave Pyrrhus into the charge of his wife, commanding he should be brought up with his own children; and a little later, the enemies sending to demand him, and Cassander himself offering two hundred talents, he would not deliver him up; but when he was twelve years old, bringing him with an army into Epirus, made him king."

The Brotherhood between him and Glaucias sons:

"He took a journey out of the kingdom to attend the marriage of one of Glaucias's sons, with whom he was brought up;"

Strabo:

He has written about the passengers traveling along Egnatia road(Via Egnatia):
"Starting from Epidamnus(Durres,Dyrrahio) and down to Apollonia, in the Right they have the tribes of Epirus....., in the Left they have the mountains of Illyria.....Then Sailing from Ambracian Golf and on, the places which is in the East and across Peloponnesous are Hellenic.

Also he writes:

"After the Epirots and Illyrians, from the Hellenes are Akarnanes,Etoles,Lokries and Ezoles

Appianus:---------(Historia Romana)-----------

In his book "Historia Romana" it is an article about the Illyrians:
"The Hellenes call Illyrians, those people wich live across Thrace and Macedonia from Chaones and Thesprotes till the river of Istria"

Ephores:

He writes : "the Head(start) of Hellas, is Akarnania from the West ,because it is the first that contacts with the Epirot tribes"

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It's obvious that the 3 Epirot tribes where not Greek by origin and language, we know very well that in the times Peloponnesian war happened, Hellenes knew very well who was Greek and who wasn't, they could recognize and see the difference between a Greek and a Barbarian.

It doesn't seem to be the opinion of numerous greek authors from ancient times of which the most prominent are Strabo and Thucydides!

They continuously refer to the epirotic tribes (including the molossians from which Pirro of Epirus was from) as "barbaric" and "speakers of non-greek language" and their land "as beyond the borders of Hellas" etc...

Such opinions are also shared by medieval authors such as Laonikos Chalcocondylas and co.

Now why would they write such things if Epirus was undoubtly greek?

How come we albanians use the term "Cameria" which is even older than Epirus for this region if we came as late the medieval era? We sure didn't get it from the greeks since greeks and even greek epirotes never use this term,they only use Thesprotia and Hpeiros etc. Cameria or Tchyameria comes from the old river of Tchyamis (kallama) and later it was used by albanians for the entire region.