"Both" were true "classically" in early 20th century Europe in the sense that capitalism being in crisis drove the rise of the communist movement. And then the fascist movement (and other strongly reactionary movements) rose in reaction / fear of that.

Today's pseudo-fascism in the form of Trumpism is something else. More of a reaction to a) climate crisis and the potential/growing crisis in the energy sector and b) and identity politics/culture-wars stuff.