Yep, dumbest idea ever.
The vast majority of my office time was in cubicles, which are pretty good. Usually enough privacy to get things done. I did have a glassed-in private office for about a year at one company. That was productivity heaven. In retrospect I was dumb to leave that company when I did, but they started demolishing offices for cubicles about 2 years later. It is all about efficient use of real estate.
I've been at a millennial run company for the last 6 years, first 4 in open space. What a productivity fuck, for all the often repeated reasons. And I really consider them de-humanizing. I gave up on trying to explain this to management years ago.
Working from home the last 2 years. Whenever I do visit the home office nothing gets done. Looking at what my colleagues do, I think they only ever get much done on work form home days.