It’s one of the most survivable forms of cancer, and he caught it early. Why do you frame it as being so terrible? Yes, he’ll likely be incontinent and sexually dysfunctional for the rest of his life if he has a prostatectomy, but prevailing medical wisdom has it that you leave the prostate alone. It’s a very slow growing cancer. Many men live 20+ years with it and never see any problems.
The story said he’s getting radiation.
Once you get radiation, there’s almost nobody who will do a prostatectomy.
With a good surgeon, the batting average on continence and potency is much higher than you imply. Speaking as a guy who’s been there and done that.