That's quite the extrapolation from what I actually said. My point is that the choice to not have children is not the same as actively helping. Not making things worse is not "good". And demonizing all of humanity as though we are somehow a virus to be eliminated is arrogant. We can be mindful of our impact on the environment without assuming that we're a problem.
If you have Choice A which actively makes things worse and Choice B which doesn't make things worse then Choice A is the "good" choice as it is the one that causes the least harm. Driving a 50cc scooter instead of a car doesn't actively help carbon emissions, in fact it still puts out carbon, but it any reasonable person would say that switching from a car to a scooter helps the environment. Splitting hairs over whether doing less harm counts as "helping" isn't very productive.