Agree, prostate issues are driven by predisposition and accumulated damage.
DHT is less responsible for its exacerbation, albeit it’s a strong growth promoter there, unlike in muscle. Estrogen has more effect on prostate growth, but AFAIK just because per same weight it’s much more “potent” than most androgens. Estradiol is measured in pg/nmol vs ng/nmol for testosterone, anabolic on its own and increases sensitivity to GH.
Cancerous cells are simply very efficient at utilizing all possible ways for own growth. Fields like that probably don’t make a difference or are even beneficial as head hair seem to get a positive boost from it.