It really depends what you're building. If you're building code that's going to go in some medical system, or a space shuttle, then yeah, you probably want to

It really depends what you're building. If you're building code that's going to go in some medical system, or a space shuttle, then yeah, you probably want to write every small function with great detail. If you're creating some silly consumer app like a "what will your baby look like in 5 years", then code quality doesn't matter you just need to ship fast. Most startups just need to ship fast to validate some ideas, 99% of your code will be deprecated within a few months