I may be completely wrong, but I'm in France and it's mostly older people (from the age of 30 or 35) who want WFH. Young people don't know they can ask for a higher salary, and, apparently enjoy working in an office or open-space.
Older developers wants personal time, and some want to take care of their kids and family which is way easier if you're at home.
At my last interview, the boss asked if full-remote wouldn't be a problem for me, hinting that it may cause loneliness or psychological issues. I told her that I had friends and could see them whenever I wanted which is why I don't miss offices.