<p>“I think that the posters here who think that they can limit what older sib tells younger sib or that older sib’s first instinct would be to refer younger sib’s questions to the parent are misreading the way siblings who are fairly close in age (and I would include four years apart as “fairly close”) tend to interact.”</p>
<p>It’s not the normal interaction I would have a problem with, but rather the perception that these parents are doing something dangerous and harming their child, so the older has to step in and save the day.</p>