That's a fine recommendation as well, I think. Adding it to the wiki's FAQ could help a lot, but it'd also help, in some small way, to put it here on the main page.
For one, I'm sure not everyone is even aware of the wiki, and if they are there's no telling whether they've been there before. I've been following the game for years and I've not once visited the wiki. Secondly, with it being on the main page, likely directly by the 'planned theme' it'd be right near where people would see that pregnancy is a planned theme; as I'm sure there are a number of people that read through the page, see that, and then ask about when it'll be added (or if it's already been added).
Just to reiterate, I do think it'd be a grand idea to add a comment about it in the FAQ on the wiki, but also to the direct game page here - where people will be able to find it a touch more directly. Even if it won't prevent many people, it just needs to help some.