It’s not being compared to WFH. It’s being compared to employees having private offices. You’re making a straw man argument.

Intentionally in order to point out that such an argument is a false dilemma. There are more options than [private office, open office]

The jump from one office type to another is far less extreme than going from an in-person office to WFH. In the absence of strong external motivators, minor changes will be more preferred due to inertia effects.