Ngl feel a little called out here... lol.
You are totally right! It won't matter in the future! But not all people who follow trends and are popular are insecure. I have always followed trends (but often put my own twist on them, or even started my own within my school!), and I'd say I'm pretty popular at school. But I don't get everything- most of it I've had to work for for sometimes years :/ And sometimes being popular just means you are super nice to everybody! Treat and consider anyone and everyone your friend.
Anyways, that's just me. But for the most part, I totally agree with you! I would also like to hear the story you were talking about :)