I think that you're confusing the "message" part of the comic with the "Joke" part of the comic.



If you wanted to prove yourself to somebody that you looked up to by doing that something could possibly be physically dangerous or emotionally difficult, and somebody you knew went and fetched an adult who stopped you from doing it, you might not thank them for it.



Sometimes the best way to help somebody is to let them take a risk. They may succeed, they may come out of it wiser, or they may get hurt.



Either way, what you need to do is to be there for them when they've finished. To congratulate them, or to give them a hug.



The makeover bit is a Rarity joke. Remember the first episode?