Artificial Intelligence changes the terms of the natalist debate
There's only a debate if you're foolish enough to let the opinions of others who are just as clueless about what'll happen as anyone else and fears of a future that may not even happen get in the way of what you actually want. If you want kids, have them- it's as simple as that.
The users of that subreddit are just chasing phantasms- the Singularity isn't called "the Rapture for nerds" for nothing, and at the rate things are going it's only marginally more likely to happen than the Rapture. They should focus a bit more about getting things fixed up in the present.