I understand that some people don't see the value in face-to-face interaction with coworkers -- and I say this as someone who has worked in most scenarios (long-term remote, long-term full-time office, and partial remote). It obviously has more value for some than it does others. I actually prefer full-time remote, but I understand why some people don't like it.

For some people, face-to-face makes it easier for them to get to know co-workers and develop a solid working relationship with them. Also, those face-to-face interactions often result in benefits for the company, as you often do still end up talking about things related to work, and valuable ideas can be exchanged that would not otherwise have been. Even if you don't talk about work things, knowing your co-workers well can be a benefit to the company. Obviously there are cases where you don't want to know an abrasive person well, so it varies.

Your post sounds like you are saying in-office work is obsolete due to it being an "old-fashioned idea" (unless I am reading you wrong). If that is the case, I would caution against the possibility thinking newer is always better, because it clearly isn't always. Again, as I said, I prefer remote work, but I also understand why others don't. The same work model is not best for everyone in the world.