This is such a baller line. Another good one is in "Up The Long Ladder" when Brenna asks Riker "What are you staring at? Have you never seen a woman before?" and Riker just casually says "I thought I had."
Here's a clearly intelligent woman and Spock has just told her to her face that her society has converted her into an object, and he did it in a way that everyone is going to interpret it in a way where they view him as sort of an effortless alpha for doing it while missing the point.
Not sure I understand what you are saying. In the episode it seems pretty straightforward he was calling her beautiful. Later in the episode she offends him someway with something she says. I don't quite remember, but it ends with Spock being completely disenchanted with her.