Many back-to-office advocates are “social butterflies”, so they will not enjoy coming back to half-empty offices. They really need everyone to be there in order to thrive.
I can't say I've missed being the social butterflies's nectar while I'm trying to do my own work.
I am anything but a social butterfly, but would be upset if I came back to work in a largely empty office. I enjoy being around people even if I don't talk to them much.
Good explanation, but it doesn't make things better. :(