I could have been fully remote, but I wanted to be in the office most days because I liked the routine and liked talking to the people who did want to come in. And my commute was short.
I would have to zoom most people on my team for meetings anyway because they live all over the world. (This is, btw, a good thing: it means we had people working on the project 24/7, each with access to different resources. I was online with the video team and could ping them with any questions, my teammate +8 hours away was online with the majority of infra folks and could get extra support with deployments. etc)
If you have to zoom people anyway, why would it matter whether they live near you and decided to stay home, or live on another continent?
I got both benefits of:
1. Getting to be social in person with other likeminded people
and 2. Having happier teammates who didn't have to sacrifice 3 hours every day commuting and were that much more alert and efficient for it.
When a workplace or organisation is capable of 3 day office / 2 day remote working - it is (or should) be capable of fully remote working.
Pretending that there is a functional business requirement for 6 of the 10 person team to be doing the morning call from their office desks as opposed to their home desks is dishonest at best.
Embrace the reality and the benefits you yourself see and create working spaces that are better than someones sitting alone in a spare bedroom.
Are we all going to just drive somewhere, sit at a desk and not talk to our co-workers cause they actually in some other office, then drive home?