Of course it is subjective. This is literally what you said:

> That is my definition.

You obviously care about optimizing for salary expenses. Most companies have room to hire more people who can do a few things well, so their definition of 10x would be different because they’ll have different expectations of their employees.

And really, if your definition of a 10xer is some poor fool who’s willing to take the job of 10 people for a single person’s salary, good luck finding someone who wants to spend their lives living that way.