A fair point, which deserves an answer. The reason they're not thinking that is, probably, that there has as yet been no evidence that there were humans in mainland Greece anything like that early. The earliest known sign of human habitation in Europe is only ca. 40k years old.

Humans in Africa, however ...

There is no evidence for Homo sapiens in Europe 130k years ago. However, according to the article, these tools are Acheulean technology, which was used by Homo erectus. These were not modern humans, and this technology was pretty widespread across Europe, as well as Africa and Asia.

"Verbification" is also a neologism, even though the activity that it describes has been occurring in the English language for several hundred years, so don't think you're going to stamp it out any time soon. Also, "source" has always been a verb, and it's use as a noun is probably the result of nounification some 500-700 years ago.