I used to share an office with another engineer, and one thing that we both preferred was t keep the lights off in our office (we had a window office and the ambient light was beneficial.
Lighting is SUPER important, and when youre in an pen office layout you have no control over your lighting.
For this reason alone, one should hate open office layouts.
I hate open offices, but having worked in all formats, open offices are bad for mental health.
When working on MPK West for FB, they built an open office to house 3,000 employees with only 5 offices (with escape hatches) for the c-suite.