I think that this is a key thing that some, especially some of the younger workers, don't seem to fully get, that while some industries can certainly run without issues in a WFH modality, there are others, where there is a definte fall off and a times lesser client expetience/services situation, even if the employee really like the WFH situation, that needs to have an in person work experience, and that's where the boss will step in and probably "offend" a few of their younger employees along they way as they are brought back into the office for the overall health of the company and it's customers/clients
I do agree this doesn't work in all industries. And even in some business it may only work for some positions.
I don't agree that it is simply a younger vs older generation thing though. Where I work is rather skewed towards an older workforce within many of the office-based positions (By this I mean people in their 40s, 50s, 60s). Quite a few of them seemed to quickly embrace being fully WFH more-so than some of our younger staff. It seems a decent number of the "older" people already had 2nd homes (down the shore, on the Cape, in the mountains, etc) and seized the opportunity to "move" to those locations. Younger people are a lot less likely to have already had those 2nd homes they could simply go to.
We also have quite a few offices globally. And many teams have people in multiple offices and have global reporting structures. Even myself, I'm technically based in our NJ office, but my manager is based in Cambridge, MA. The people I work with on many of my projects are spread out in offices in MA, NJ, CA, PA, France, India, Germany. So for this scenario, what's the difference between being in an office vs being at home when I'm not going to physically see any people I work with in the office anyway?