HR is driven by data. To kill open floor plans, start citing the floor plan as the primary reason for leaving. If that becomes a theme, IMO open floor plans will become cancer. It just takes time.
It doesn't matter how innocuous the comment is. It can come back to bite you. Example:
You: "I don't like open floor plans."
HR: "Add a note to his file that he's anti-social. If he ever comes back here it'll be recorded already."
Jobs aren't scarce, but talent is. I've never gone for want of employment and Google blind-allocated me into a boring gig I hated. And yes, I'm very anti-social when I'm coding. I wouldn't want to work for a company that considered that a negative trait.
Is that something like "Quit my job at Google, middle fingers in the air," or what?
This is not my experience.
Maybe you've worked with better companies than I have.
HR is driven by perceptions