I am sorry. This is just flat out false. MGS2 and MGS3 are very firm about the gigantic size of Raiden’s dick. The president groping it, the guard stating “man, I wish I had that!” when he is naked on the torture bed. Raiden having a huge package is very much confirmed canon.

Whereas the speculation that the radiation that made Big Boss infertile would somehow grant him mammoth meat is a fiction that exists solely within your mind.