Salary isn't just a factor of skill, but willingness to pay high salaries is the same as belief that skill matters a lot. A manager who doesn't believe in high developer skill variation will not pay significantly above market rate, while a manager with strong beliefs in skill variation will pay huge amounts for the right people. Therefore I see any arguments against 10x developers as an attempt to supress wages, likely managers who wants to hire good developers without paying them more than average developers, or developers who are jealous of others salaries. Luckily a lot of companies acknowledges that talent matters a lot and pays a lot for it, and today the highest valued companies in the world belongs to that group.