The benefit of talented engineers comes from the fact that they avoid costly pitfalls - not that they pump out more code per hour worked.
I feel this "10x programmers are a myth" attitude comes from a good place of wanting to promote harmonious working and skill-up junior engineers, but it seems so totally detached from reality. I'm not sure the "benefit" of propagandizing against talented assholes is worth the cost of demotivating people who might be inspired that they could become a 10x engineer.