Not every member of the fuck cars community is about car infrastructure, even though I personally fall into the infrastructure camp.
Say you have the viewpoint that guns should be tightly controlled due to the number of people killed by them. Cars kill approximately the same number of people in the US every year (depending on if you count suicides and if intent is important). If guns are bad for deadly external behaviors, then so are cars. Just like how there are gun ranges or race tracks for responsible ownership, there can be gun related murder and car related murder. Ban guns and ban cars.
Case in point is this very article. It appears to be a hate related crime committed with a car. Germany tightly controls gun ownership, so why would we dismiss tight control of car ownership? Should we allow this person to drive again if he’s convicted? Why do we allow DUI drivers, who have killed others before, to continue to drive again? What do devices like ignition interlocks say about us?
Are they? I’ve seen plenty of well-liked memes of banning cars as well as guns. There are popular posts about banning cars entirely from various developments. Or outright hate and venting when another ghost bike gets installed.
IMHO, the urbanist movement is more focused on infrastructure than fuck cars. Fuck cars is more encompassing than just urbanism and civil engineering.