We are still talking about working during work, right? Or are you playing with your kids and having beers with your friends while you work?
It is a strawman argument to claim that people who want to go to the office have no social life. It is in fact easier to claim that "only antisocial people want to hide at home like a hermit with their webcam shut off."
When work and social life are the same, you never need to leave work.
I've seen too many buy into that just to lose their entire social lives over a job change, and also have horrible life satisfaction over the long term.
Yes if you have no life outside of work then it can't be good. However I still don't know if that's a common enough problem to solve for by making everyone work from home.
I think the more common issue would be lack of collaboration and ties to the company and colleagues when working fully remote.
