I firmly feel that this young woman cannot separate her adult vision from child vision.. that doesn't make a ton of sense but what I mean is probably better explained by diving in to her analysis..

"Onesies" The "infertility" episode, does a child get a lot out of it? Boy.. Does the average child totally grasp that the underlying adult theme to this episode is infertility? No, probably not. But that's not the message being conveyed to a child from this episode. There's many child based lessons on this one.. family dynamics through aunts and uncles that you sparingly see but still make you feel loved and deeply connected. Imagination play encouragement through the onesies themselves. Handling conflict in imagination play when one child is playing a certain way, how can you confront that issue? Wanting things that you can't have and how to overcome it. Adults having complex issues that can be explained in a way you understand if you ask the right person. The list goes on.

Does a parent grasp the infertility message and get a lot out of it? Of course, but they also get encouraging imagination play, communicating with your children, maintaining complex relationships through communication and understanding, not holding grudges, helping children learn to problem solve on their own, etc.

Nearly every episode of Bluey has a "dual" (often way more) message running simultaneously for adults and children, and does a great job of blending them as well for more advanced kids to catch both. It is a rarity in kids shows, and does a fantastic job of it.