Why you hatin' on tertiary and quaternary characteristics?
Body hair growth is triggered by hormonal changes, so body hair could be considered a sexual maturity adjacent characteristic.
Do you also consider a woman's preference for non-hairy guys to be an abnormal fetish?
What about butts? They're not (biologically) sexual organs, any more than mouths are; do you consider the admiration of butts to be a fetish?
Why do you include breasts (I assume these are your secondary organs?) as in the "not a fetish" list? They have nothing to do with the passing of gametes; they're only valuable long after the sex act.