Earlier quoted context omitted.
All my favorite working arrangements have involved sitting in small teams, either in a room or in individual cubicles (such that you're only in really close proximity to a few other people). I've had my own office before; it's seriously lonely. I'm skeptical of people who say that being in an open office doesn't affect their productivity at all. Really? How can you be sure?
A very casual observation by me is that open office favors shallow work. Things that can get figured out quickly. Same for decisions made in large meetings. It doesn't work well for problems you have to work on for weeks and where there is not a clear path. Just my personal observation how open office or a cube farm with loud neighbors affects me.
For me, the part of coding that is art simply does not happen in an open office.