I'm sorry but this is not what Oliver Dickinson is writing and it's not what modern archaeology is discussing. Again:
Here it is necessary to return to theories already mentioned above which depend on the notion that the traditions of invasion by Dorians and other groups encapsulate historical fact, and that the Mycenaean centres were in fact destroyed and their territories conquered by other Greek-speaking peoples. Often their source has been suggested to be Epirus, particularly by Hammond (1932, 1975), although there is no warrant for this in the ancient traditions, which do not derive any of the supposedly incoming peoples from outside the boundaries of Classical Greece. As noted above, it has often been thought a difficulty that no major archaeological change can be associated with such an invasion, but this is much less of a problem if the Dorians and allied groups in fact came from within the area of Mycenaean culture.
...
The proposed distinction between Mycenaean and Submycenaean burial customs is far from clear-cut (see Chapter 6), for the vases and metalwork typical of the cist cemeteries can also appear in chamber tombs. Also, many of the best examples of cist cemeteries are found in Attica and Euboea, which according to the traditions were not successfully invaded by newcomers, whereas such cemeteries are notably lacking from classic Dorian areas such as the south Peloponnese (pit and cist graves are now reported from Sparta and Amykla) and Crete. There are also significant variations in burial customs between different cist cemeteries, undermining the suggestion that they represent a homogeneous culture.
I suppose that our discussion has reached the point where we have to agree to disagree. For what it's worth, I suggest you update your bibliography. The "Dorian invasion" and similar theories aren't taught at any university today.
(To the comment about "protochronism", there's no need to even reply. If someone wants to claim (based on 50 y.o. speculations) that there was a "Brnjica culture" when confronted with the actual data which really show no actual differentiated material culture, they can certainly do so. As for Alaj, he writes that: Ces migrations de la période énéolithique se caractérisent aussi par la venue de groupes semi-nomades de la partie supérieure de Danube, à l’origine de la culture de Baden. Le mélange de ces cultures autochtones avec l’apport de populations indoeuropéennes ont constitué le substrat à partir duquel se sont développées à l’âge du. Les plus connus sites de l’âge du bronze fouillés au Kosovo son Vlashnje, Korishë, Pogragjë, Teneshdoll, Bardhi i Madh, Gadime e Epërme, Graqanicë-Glladnicë, Lubozhdë, Përçevë, Volljakë, Ticë, Budrigë e Ulët, Topanicë et Nasale
La période de l’Âge du fer par rapport à la période de l’Âge du bronze voit une augmentation du nombre d’habitats mais n’enregistre aucune rupture, comme va le montrer ce travail. Les études menées dans cette région ont montré que l’espace dardanien entre dans le groupe ethnoculturel Glasinac-Mat des Balkans occidentaux, et représente un groupe particulier de la culture illyrienne de l’Âge du fer)