The difference between the Idol Club and Lanzu's Association is similar to the difference between eating cookies at a high-end bakery and eating your mother's cookies.

Sure, the bakery will use the best ingredients and cook it at the perfect temperature, but the cookies your mother makes just for you will most likely taste better.

Lanzu doesn't understand that, therefore her mother has never made her cookies before.

And that's my new headcannon for today, have a great morning.