There is no medical data to establish this as fact and no reason to presume it. Please stop repeating it unless you can cite references establishing it as true. I have searched long and hard and found only evidence that appears to contradict this statement.
Testicular cancer risk is higher in those born with undescended testicles. Testicular cancer risk is higher in those bor
IN BOTH TESTICLES. This suggests no correlation between auto-cryptorchidism and testicular cancer. It highly suggests a correlation between congenital birth defects and testicular cancer.
The remainder of what you said is correct.