Before the rise of the Cholas, inscriptions from Java, Indonesia, mention only the Kalingas as foreign visitors from the eastern coast of India. In 1021 AD an inscription added Dravidas to the list of maritime powers, and they were then replaced by the Colikas (Cholas), in the year 1053 AD. The Kalinga traders (of modern Orissa) brought red colored stone decorative objects for trade. Kalinga was also an important source of cotton textiles to Southeast Asia at an early date. In the Tamil Sangam classic, Chirupanattuppadai (line 96), there is a mention of blue Kalingam. Fine garments of high quality cotton imported from Kalinga country into the Tamil country were called Kalingam, which shows that Kalinga was an exporter of cotton at an early date.
so here, the dravidas are different where as tamils/cholas are different people. probably the pallavas are called dravidas, the orissa people are also called kalingas as well.
the history alone debunks this stinking theory, not to mention archaeology.
if andhras were not satavahana btw, the pallava would have been called andhras and not dravidas, it also suggests that dravida was a native name not the one given by north indians.