For me, it's more like, don't be afraid to write a garbage first draft. You can grow something from it. But it won't always be bad. Sometimes, I pound out a first draft, and I am like DAMN, this is *close*. Still needs work, but sometimes you know you really have something, and that's cool as hell.
Puff the Magic Hater
A piece of writing advice I vehemently hate is the “your first draft is gonna be hot garbage” take that has become prominent lately.