It is very clearly male-derived, since in women, the urethra is the first tube.
Male-coding is clear in the idea of a vagina as a "hole", because the vagina is not a "hole", it is a channel designed to receive sperm and deliver a baby.
In a male the penis is a one-way system and the urethra is not a separate piece of anatomy.
Calling a vagina a "hole", codes it as a one-way, dead-end system designed only for penetration.
But also, referring to a complex piece of female anatomy as a "hole", is a deliberate attempt to obscure the reality of female biology. It is reductive, misogynistic language which should be resisted.