Fascists typically believe in strongman leadership, but you don't have to swear allegiance to a specific strongman to be a fascist.

Eco-fascists, in particular, want a Pol Pot-style dictator, someone who will ignore laws, human rights, and common decency, in order to drastically reduce the human population and force the survivors into low-tech subsistence farming. Last I checked, no one like that is anywhere near power anywhere in the world, but that doesn't make eco-fascists any less fascist for it.