But what you describe definitely rings true. Many of my friends grew up with two working parents in a nuclear family and didn’t realize how incredibly tough that is until they started having kids themselves.
My ideal is grandparents a few houses down, within a couple minutes walking distance.
These days, not only is the world population more urban, but people are also more consistently aware of the inequality problem. People are realizing they have no hope of providing the best opportunities for their children, and are deciding not to have them. I don't see that as a bad thing. Voluntary population decline might be the best outcome for humanity at this point, at least until we get our political, economic, and ecological shit together. We don't need 10 billion humans to be on the planet; we need to get through this era of war and capitalism without making ourselves extinct.