Hasn't work from home been shown to improve worker efficiency and happiness too?
e.g.https://www.forbes.com/sites/bryanrobinson/2022/02/04/3-new-...
The isolation of being at home is countered by how many people are at home
That number has little to do with WHF. WHF might have increased it but it certainly isn't the root cause or even a major driver of the rise.