In so many words, yes.
He actually said, that 47 KOhm phono input wil show 480 Ohm at the primary of the MC-10L, which is a good match for Kiseki, that recommends 400 Ohm.
And yes, the correlation with primary resistance is rough.
I really had a choice to order any of the Ypsilon SUTs and just went with what the designer recommended.
I had a Zesto phono with integrated SUTs long ago. So technically, I can't isolate the sound of the SUT. But I'll just say George likes a really warm sound. Much warmer than I like. This bears out at shows too. His suites are always warm sounding.