If that's true, then they are not "10x developers". Being super-productive, but only by yourself in a vacuum, is next to useless to any company with more than 1 employee.
If you're a 5-10 person startup, don't you want to have the person who can write version 1.0 of your product by himself in a couple of weeks? Then, when you start having customers, have a bigger team and redo things cleanly.
There's another important fallacy.
From the viewpoint of a 10x worker, the /10 worker is toxic.
From the viewpoint of a /10 worker, the 10x worker is toxic.
Not if that person is toxic and awful to work with. I don't care if he's 10X, 20X or 100X (Not that I even believe in the myth of the "10X developer").
If that's true, then they are not "10x developers". Being super-productive, but only by yourself in a vacuum, is next to useless to any company with more than 1 employee.