Sure, playing chess needs intelligence, dedication, and good chess players are smarter than an average person. But it’s waaaay exaggerated in movies. I’m a math researcher, and in any movie, my department will be full of chess geniuses. But in reality, only about 10% of them even play chess.
Yeah I always laugh when movies or TV portrait a character being good at strategy by depicting them being good at chess. Those two have zero relation. Total war on the other hand, get good at that and you’re cracked at strategy