You're really underestimating how uninterested in history the vast majority of people are. For many literally the only things they know about Sparta, spartans or the persian empire of the time is cobbled together from that dumb fucking movie. I've already gone into depth about Miller's political stances in other threads and how it affected his portrayal, no need to rehash it again. Suffice to say it's basically political propaganda, and if you think it's just a massive coincidence that shit like this is getting released simultaneously with other political propaganda painting Iran as evil and depraved in 24 hours news cycles, not to mention the obvious West vs East symbolism, then you're the idiot.