But keep in mind that it’s easy for adults to project their adult experiences into children. When a kid asks how babies are made, they are very unlikely to be asking about intercourse or romance or eroticism or pleasure or any such thing, nor are they even likely to be particularly interested in those topics. They are probably asking for something about how a sperm and an egg combine to make an embryo and how that embryo grows up into a baby inside of a mommy. They might be interested in how the baby gets out. They might be interested in how the sperm and egg combine, and, depending on their age, they might be fascinated by genetics. Maybe they’re interested in how some animals fertilize eggs inside of mommies and how some other animals fertilize eggs after they’ve been laid. Some kids will be interested to learn that plants do this too. (But mosses are quite different, as are creatures like aphids and even oranges!).
And yes, kids should know how sex works, how consent works, and how sex results in babies before they figure it out by accident. But that’s unlikely to be anything that a 5 or 6 year old asks.
(5 year olds are very likely to need to be aware of consent in non-sexual contexts, though.)