I have developed this as well. Found this thread after doing research on why I produce very little earwax.
And as @Dubya_B pointed out it’s due to malfunction of the apocrine glands.
They’re found in the armpit, ear, groin, eye lids etc and produce the “oily” kind of sweat that bacteria enjoy which gives it it’s distinct smell.
This would explain why my penis glans is tinder dry, as apocrine glands is active there as well (or should be).
These glands are inactived until puberty, and some kind of hormonal cascade turn them on. Can’t shake the feeling that fin basically “undid” puberty for us lol.
But they also react to adrenaline. And we know fin affects the PNMT enzyme that is making adrenaline. So it could be either androgens or adrenaline which leads to the malfunction.
In my case I’ve also noticed I produce much less sweat during sexual activity, something I believe adrenaline is regulating.