Most day-to-day work still happens at a desk; open-plan, private office, or a shared unassigned workstation. Whatever the layout, the job is the same: comfortable, focused work for hours at a stretch.
Hybrid work has changed what a desk needs to deliver. Unassigned desks work well when there's real variety of other spaces nearby. Without it, workplace experience drops lower than any other setup measured, including home working.
Two things make the biggest difference: a chair that adjusts in seconds for whoever's using it, and enough acoustic control that focus doesn't depend on a silent room.