Granted. As I said, killing people is out of the question, pointless (apart from unethical), and unneeded, as population growth slows even at a far less luxurious lifestyle than most of the west enjoys now. As long as all have a reasonable chance to participate, especially women, and to can grow old securely and safe even if they don’t pop out children. (Okay, i didn’t say that before)
But I consider it a bit dangerous to jump into these discussion with “Malthus was wrong”. You won’t teach the racists anyway, ecological concern is just an excuse for them. While in fact the right is usually not willing to actually do something about ecological problems. You can see it splendidly right now with the Alternative für Deutschland (AfD).
But a lot of people on the fence will take this as “all is well, we don’t have to do anything, science will find a way”.