It's perfectly possible for people to be passionate about the subject.
This move isn't just "Local French commune thinks about Linux", it's "French government agency that can mandate what others do, set hard guideline for agencies and magistrates to come up with a concrete plan for how to move to Linux", which is worlds beyond what we've seen before.
Nah, linux and "$curreant_year is the year of the linux desktop" is just something the hacker / maker / nerd scene is passionate about.