There are many environments in which NNPP's are pretty much the standard, programmers that produce more problems and bugs than actual working and sustainable solutions.
In such an environment any competent developer will quickly stand out and will easily be labelled as a "x-times engineer", when all they actually are is just good at their job where others fail miserably.
The 10x myth is a way to give a positive spin on the shockingly common incompetence in our field.
I divide my officers into four groups. There are clever, diligent, stupid, and lazy officers. Usually two characteristics are combined. Some are clever and diligent -- their place is the General Staff. The next lot are stupid and lazy -- they make up 90 percent of every army and are suited to routine duties. Anyone who is both clever and lazy is qualified for the highest leadership duties, because he possesses the intellectual clarity and the composure necessary for difficult decisions. One must beware of anyone who is stupid and diligent -- he must not be entrusted with any responsibility because he will always cause only mischief.