There is no doubt that Aleister Crowley based his aeons on Darby's dispensations.
I'm not the only one who knows this.
"In order to historically situate his revelation The Book of the Law, Crowley proposed a progression of Aeons, or periods of differing spiritual economies or "formulae." Despite the gnostic appellation of "Aeon," Crowley's basic idea was almost certainly [but not "absolutely certainly] influenced by the Christian doctrine of Dispensationalism which was championed by the Plymouth Brethren fundamentalist movement to which Crowley's family belonged. Dispensationalism has since become very popular among American evangelicals in particular. Certainly, both Crowley's Aeons and the Dispensationalism of Plymouth Brethren founder John Nelson Darby share a basic intellectual infrastructure with the metal-identified ages of Western antiquity, the Yugas of Hinduism, and even the various Manvantares and Kalpas of Theosophical meta-history." - T Polyphilus, Aeons Beyond the Three
Pure anecdotal speculation unsupported by anything Crowley wrote. I'll accept it as your admission of lying.
Now if you'd be so kind to show from Crowley's own words where he EVER heard Darby preach, as you claimed.