It's 100% untrue. Men are beautiful. You are beautiful. Believe in yourself and remember that the most attractive thing in the world is a kind heart and that starts with being kind to yourself.
Don't let the world make you feel ugly, they're just trying to sell you shit.
Unrelated mostly I think, but it does make your hair healthier and for me there's less frizz and more volume. I've been doing it for about 2 months now and my hair is normal, it doesn't get oily quite as fast and I only wash it with water. You do need to kind of massage your scalp before your shower and during to help get the dirt and oil rinsed off but honestly giving myself a scalp massage is not at all a drawback lol