No, I'm pretty sure it's just them being idiots. It's usually easy to tell if a writer has enough skill to take a trope or a stereotype and turn it on its head to show that "still think it's funny, huh?", and this particular fic just wasn't. It was so obviously clueless that I couldn't even finish reading it. I did skim it through to see if anything similar happened to the female characters, but as far as I could tell, they didn't even address the issue of one of the de-aged girls already having an adult boyfriend. Wtf.