Your man is not yet a dictator, hence the "would-be".
'“We love this guy,” Trump said of Hannity. “He says, ‘You’re not going to be a dictator, are you?’ I said: ‘No, no, no, other than day one. We’re closing the border, and we’re drilling, drilling, drilling. After that, I’m not a dictator.’”' -- quoted by the AP (consistently rated one of the most politically neutral and trustworthy news outlets). So, your guy wants to be a dictator when he starts his next term . . . and you, apparently, trust him to put that power down. He's no Cincinnatus, and not even as competent as Sulla.