I thought the same. Rearing a newborn recently, I find that much of the parental/pre-parental advice works well. However, I just now realized, they probably actually understood the problems. But since only the advised actions stuck in my mind, without the problem analysis, I came to think they would act on gut feelings. I think this is sort of a child/grandchild bias.

This leaves aside parental scorn/ignorance as you describe it. Sounds like stressed-out parents, if I may say so. However, I don't know how future generations will get better at it, only that you may get better at it.