Me too...but it’s the overall effect that counts and decisions like “can we afford another kid” are often made holistically, by factoring in everything, but not necessarily calculating it out.
Of those people, when one considers the thousands of dollars saved in taxes (including getting credits) by having another kid...factor greatly into whether we can achieve, or at least come close to replacement rate.
If we simply tell everyone to suck it up if they want more kids...guess what, less kids.
Canada was a little more transparent. You flat out got a baby bonus, regular monthly payments of $5 to $8 to all parents of children under 16...which is less than I pay for Netflix. LOL