Write About Writing - Is That a Good Idea?

Right now, i'm working on a book about writing in the form of a bunch of hyper competitive writers who are trying to kill each other because unde under the idea that writers should not write about writing. It'suenly like a, a probably 300 page book. And i wrote the first hundred pages ininbout a week. I usually, peke, will write three to five pages a day. But this when i was writing, for the first time in my life, i was writing like a minimumi 12, 15 pages a ah,. Because ther just fell into the voice. So we'll see if other people dot. The gohas is hasa wholly unwanted craft