No the short is not created by the original part. What he saying is if he shorts the coax on purpose(to test it) the part is doing what it is supposed to do.
Yea, what he said.
Let me see if I can state this clearly. (honestly? well I'm not a salesman, just a old country doctor)
If you already bought the part Digi-Key recommended earlier, please use it. It is fine. I did.