He is an active, high-level, participant (formally an adivsor, clearly practically exercising directive influence) in a fascist, kleptocratic regime. There may be some definition of personally being a fascist where this is consistent with him not being a fascist, but I would suggest that any such definition is inconsistent with what the bast majority of people you might speak to mean by “being a fascist”.
> Fascists don't follow neoclassical economics.
Neoclassical economics, like Newtonian mechanics, is an approximate descriptive model, not a normative system; to the degree that it is accurate, everyone follows it, regardless of ideology.