Had a guy go back home to Spain. Two back to France. They're just all so much happier being around family and friends in the parts of the world where they feel most comfortable.
I don't have children and I'm not married, but even I agree with them the a job and an office is not something I'd choose to do if I didn't have to; not having to physically transport myself and sacrifice large parts of what actually matters on the altar of employment makes a big difference.
Hyperbolising for making a point, I suspect that for people who are married and have school-age children, any office culture is bad in that it sucks up time and attention from the things that really matter [0].
Maybe it's about what matters to the individual. If the job and the office is the most important thing in someone's life, then I can see that they'd want the office back. And genuinely, good for them, hope they enjoy it just as much as I hope the people above enjoy spending time with their kids and family.
[0] Yes, I know, recharge the batteries away from the kids, maybe I hate my family, etc etc. There are always exceptions.