Your draft words or descriptions might be redundant. So what? They can
be fixed later. You might make grammatical mistakes. So what? Promise
yourself you’ll fix them later—after you’ve got the story written.
I don't write fiction, but from what I've read of authors that do (whose work I like), this can be quite a reasonable approach. In the first draft, just go hell-for-leather, getting the ideas down and keeping the momentum going. But coupled with this:
... Surprisingly, when I went back to the initial pages, fully
intending to spend weeks on major editing and rewriting, I found that the
constant, intense practice had taught me to produce crisp, fast-paced
writing as compelling as if I’d spent hours agonizing over each page.
Yeah, no. He's not seeing his writing as others do, clearly, if he thinks that first burst of creativity is anything close to finished. And it shows - poorly chosen metaphors, much recapping and repetition, and telling, not showing. All stuff that needs to be weeded out of a first draft.
Writers on Rewriting