The fascist state doesn't need culture but a human society does.

Nevertheless I see your point and I do partially agree, I just think Orwell exaggerates how much of human identity is annihilated by a fascist system. The bourgeoisie - even a fascist bourgeoisie - still want to preserve some kind of art and history even if it is heavily sanitized and revised to fit their absurd narratives. They are still humans themselves, even if they seem to hate everything good about humanity, and so still need a culture to enjoy for all the same reasons the common prole does. Something beyond just mindless entertainment, which is what Orwell gets wrong: fascism is high class, not low class. There is no poverty cult; there is an opulence cult. This is because it is a capitalist system. But Orwell was an idiot who believed Stalin and Hitler were the same thing with different names with no experience with either system or what they actually looked like beyond anti-communist propaganda. Looking at the content of his "critique" of the USSR it reads almost identical to Trotsky's, indicating exactly where he got his absurd ideas about Stalin from.