The app for independent voices
"fully functional" also includes producing sperm.
"The functions of the testicles are to produce both sperm and androgens, primarily testosterone."
One can have one without the other -- a case in point being "XX males":
"Based on limited evidence, most XX males appear to have typical body and pubic hair, penis size, libido, and erectile function. In all reported cases, individuals have been sterile, with azoospermia (no sperm in the ejaculate)."
Moot what Khelif in particular has, but CAIS people tend to be sterile -- i.e., sexless.
And PAIS people seem to be typically "sterile" -- i.e., sexless:
"Previously, it was erroneously thought that individuals with PAIS were always infertile; ... "
Though somewhat moot whether Khelif has 5-ARD, but some indications there that those with that DSD too are infertile, sterile -- i.e., sexless:
" The internal reproductive structures (vasa deferentia, seminal vesicles, epididymides and ejaculatory ducts) are normal but testes are usually undescended ..."