"We have an opportunity now to do something about climate change by travelling less and WFH more."
It's not just climate change. WFH with kids around your feet is a challenge, but so is being tied to your desk all day when those kids are kicked out of school mid-afternoon, and so is spending an hour or more each day travelling. The last six months have allowed some people to discover that there is a completely different way to play work/life balance and with appropriate technology can be a far better balance.
On the other hand...
If your job involves large or expensive equipment, or involves actually being in a particular place to engage with the people there, then WFH isn't an option and you've probably spent the last six months in a state of inner fury at all the journalists writing yet another bloody article about WFH.
Also, most of us who have spent the last 6 months at home already *have* decent working relationships with the colleagues we meet on Teams or Zoom. It would be interesting to know if someone starting a new job from home feels the same way. ("I've been here 6 months and haven't met anyone yet.")
Also, personality types aside, some jobs are naturally solitary because they require a lot of concentration but other jobs are typically done in very chatty offices. I wonder if the latter are best done "from home" with an 8-hour long video conference call running to enable the same environment.