Slow can be fast.

As I got older and more experienced, I didn't produce code faster. I just produced the right code. If you don't have to try five different things, and debug them along the way, you can be a lot faster without "going fast".

I've seen people work very quickly to create vaporware. I've seen people spend a week to change 2 lines of code and save a release. I don't know how people who practice engineering haven't seen these types of things happen.

I've even seen a guy spend most of his work hours as a mentor even though his title was something like senior engineer. If anyone fired him that company would tank so fast...