There is no propaganda. What are you talking about? As a self-identified leftist, the spaces that I have been in have only advocated for policies that would help families specifically. Personally, I would love to have a family, but I've weighed the ethical considerations of bringing a child into a world where they may not be able to even afford the bare necessities of life faced with global warming, pollution, etc. If I suddenly have a reason to hope that the future will be good for a child, I will reconsider having one. But having weighed the odds, I can't in good conscience make that decision.