I don't really agree, since I consider myself a 10x engineer.
I have countless of examples of guys struggling for 2 months on some project. They get stuck, ask for help and I look at it and build it from scratch in a week.
It's not I'm typing faster, it's more about choosing the right architecture and libraries. You can save insane amounts of time by making the right descisions.
Besides the overall architecture descisions there are a lot of small day to day choices to make. If this value is not valid, do I throw an exception, or silently log something?
In both the small and big design descisions there is always a tradeof. Talent and (years of) experience makes that these descisions come from intuition, which can make you a 10x developer.