From your Vinca link :
"Several eminent archaeologists of the time (such as Childe, Hood, Vlassa, Maccay), were convinced that the Vinca had somehow been influenced or 'cradled into being' by the mistaken belief at the time that the Sumerians were the 'Mother race'.
However, much to everyone surprise, more recent discoveries of earlier Vinca settlements have shown quite clearly that events must have occurred the other way round as the Old European settlements, along with writing, pottery, metallurgy and 'Ubaid' style art, date to a thousand years before the first Sumerian fingerprint, suggesting remarkably that it was actually a Western European culture that influenced Sumerian development."
There may be some confusion as to just what constitutes the term Aryan. The ancient name for India is Aryavarta, literally, "abode of the Aryans." The Sanskrit root of arya is "worthy, holy, noble." The later ethnological misuse of Aryan to signify not spiritual, but physical, characteristics, has lead down a racial path instead of one of enlightenment. The error hasn't been helped by Aryans being labelled Indo-Europeans, and/or, differentiated through language.
This detour of major proportions was exacerbated by Hitler sending study groups to Tibet, Sikkim and many places worldwide in search of Aryans, as he believed that the Nordic race was Aryan and was ethnically superior to other races. So, we have images of his team measuring the eye widths of Orientals to see if they matched up with those of Bavarians. Looking down the wrong rabbit hole, Adolph never found the lost Aryans but the legacy of Aryan Supremacy lingers on. Therefore, one can quite easily see how a balanced, unemotional viewpoint is difficult in a discussion of this nature. Hence, the bias by fellow academics against Waddell is understandable in this light.