I thought my other comment was way too terse, and was going to elaborate, but it looks like two people disagree. But anyway: my point is that there are ways to help people now which don't also help them reproduce; education would be the most obvious one. (“Removing the natural selective pressures against low-IQ / high time-preference people” is not what has lead to the observed negative correlation between IQ and fertility; it's not that stupid people have more children than they used to, it's that smart people have fewer.)