Current scientific evidence does not support the idea that soy is harmful to males.
Not true: "Feminizing effect of phytoestrogens and soy products may be subtle, detectable only statistically in large populations; it can be of particular importance for children and adolescents." [0]
Jury is still out on soy. If you've had to deal with the latest league of junior devs, it makes sense why they're called "soydevs."