As I said elsewhere: we structurally undervalue good, in-person interactions - see Sherry Turkle for that. Pleasant office spaces are rare, so my pet theory is that those who have been the loudest proponents of all-remote have never had the experience of a nice, social, engaging office.
Those two experiences can live in parallel. I used to have 2 or 3 days WFH to get shit done, and 2 or 3 days at the office to see people. I do my own time-tracking, so I can even quantify the degree to which my office days are less productive, yet I still choose to go there. Not to concentrate, but to grease the wheels of projects and work relations by being there in-person. I think it's detrimental to a team to go all-remote when the grey area of sometimes-remote contains the best of both worlds.
This is the core issue. The advantage of the office to the worker has been so severely deprecated that no one values it. Meanwhile the advantage of the office to the employer has been eroded. Fundamentally, jobs suck much harder than they used to. Working remotely dilutes the suckitude.Pleasant office spaces are rare,