Yes, good point LittleBella. I'm glad you're finding the resources to break out of that pattern with your own children.
I think what is often the problem is that people who don't particularly need the advice (those lucky enough to have had a good example in their own upbringing) read it all and get a bit paranoid and competitive rather than trusting to their own judgement. Obviously even those who had the advantages still need some advice and support, but there's a risk that they overdo it and just start fretting.
And on the other hand, some of those who could really benefit from this kind of advice and help either don't hear it, or hear it and don't feel able to make use of it, or hear it and don't care. I guess the tricky thing is to get the help and information to those people in a way which enables them to make use of it, and helps them to get over the problems in their own lives which get in the way of them becoming better parents. But there's a lot more to that than just telling people what they ought to do, which is where a lot of the government initiatives fall down.
It's like all the healthy eating info which we keep being given - it seems to suggest that people eat unhealthily because they don't know any better, so you just have to give them the information and they'll automatically change their ways. But there are lots of other factors which affect what people eat, like the fact they're used to certain things, access to fresh fruit & veg at a reasonable cost, not knowing how to cook from scratch, etc, which you also need to address to make a real change.