Really smart people might also have sufficiently many things that they were interested in that, even without sexbots, they might consider finding a mate too much effort for the gain. While they’d probably prefer a real partner to a sexbot, they might very well prefer masturbation-with-a-sexbot to masturbation-with-just-ordinary-porn, and the difference might be enough to further reduce their interest in acquiring real mates.
Really smart people might also have sufficiently many things that they were interested in that, even without sexbots, they might consider finding a mate too much effort for the gain. While they’d probably prefer a real partner to a sexbot, they might very well prefer masturbation-with-a-sexbot to masturbation-with-just-ordinary-porn, and the difference might be enough to further reduce their interest in acquiring real mates.