There is nothing “problematic” about fertility deities, they just aren’t very interesting to adventurers.
And that's also true for the spell list, clerical and otherwise.
You have a zillion ways to electrocute, fry, freeze, or dissolve someone, and probably 8-10 ways to fix them afterwards, but there's no 'enhance fertility' spell, or 'ease childbirth' spell. And no 'contraception' spell either. And of course there's a zillion other common household and hygiene-related spells that probably SHOULD exist if you're thinking of the sort of matter that preoccupied people in pre-modern societies. Empty Chamberpot. Delouse Bedding. Plough Field. Though I suppsse Unseen Servant could do a lot of that stuff.
I'm sure in an actual internally consistent D&D WORLD, someone would have invented these spells somehow, or a family/fertility/healing/whoever deity would have granted them. But at the end of the day it's a matter of page count, and D&D is a game of monster slaying, and even if Chauntea or someone is granting them, they didn't make it into the books.
Love gods have the same problem. Almost every real-world culture has one (we don't talk about the Aztec pantheon, those guys have problems...) but what spells do you give a Love domain cleric? Charm Person is the first on anyone's list, but that's ... not unproblematic at a glance, even though by strict rules as written it doesn't imply consent issues. The Peace domain cleric had the same problem. I love peace, that's why my powers make my friends much better at fighting!