"Celt" Conjecture

[Rumo]

• Ironically, if Strabo is correct in his etymology of the term Celtic, it is quite possible that the original Celts may have spoken Ligurian rather than the language that their name has subsequently come to signify.

What is it that Srabo is actually saying, other than the ancient Greeks did not get it fully correct? Is it enough to pin the Celts down to Ligurian speaking peoples?

Strabo is saying Greeks met Celts on the southern coasts of France which in ancient times was inhabited also by Ligures. Strabo also points out that Ligures and Celts have similar ways of life.

But you should note there's little known about ancient Ligures and many speculations were made about their language: that it was another Celtic language, another IE language or even a non-IE language.