I should (but am too shameless to) feel great shame in admitting that I was pretending that your question itself had a blank in it (rather than being about the “…., that is” schema).
But to seriously answer your question, no, I didn’t get it from Lew as far as I know.
Has Lew Rockwell imparted his love of “…., that is” to you?
Your query seems semantically unsaturated.
I feel great shame in admitting I have no idea what that means.
I should (but am too shameless to) feel great shame in admitting that I was pretending that your question itself had a blank in it (rather than being about the “…., that is” schema).
But to seriously answer your question, no, I didn’t get it from Lew as far as I know.