A friend writes:
[Y]our statement that “he evidently did suffer from a natural deficiency on this front”, referring to LAs supposed lowered testosterone levels due to only having one testicle, is factually incorrect. There have been numerous papers that have clearly determined that removal of one testicle does not change testosterone levels.
A quick Google confirms:
If doctors only need to remove one testicle, the patient shouldn’t have any long-lasting side effects. The remaining testicle will kick into overdrive and start producing more testosterone to make up for the missing testicle; therefore, he should have no problems having sex and won’t require testosterone replacement therapy.