The majority don't prefer mediocrity. That's all they really can do. We just don't know which of the majority actually has the mythical 10x ability that easily.
If we're just talking about the simple root premise some people are 10x more effective / efficient or simply deliver 10x the output at the same or better quality - sure yes I absolutely know those people and while I wouldn't consider myself one of them I certainly tend to get a lot more done than the average engineer I work with.
However - I don't agree with you that _anyone_ can be 10x "better" than the average person as I regularly encounter people that do not have innate logic and troubleshooting skills nor the curiosity required. I do agree that plenty of folks are content with mediocrity - most of them have ended up in "enterprise" companies.
Don’t be sad. It’s okay that other people do something better than you. Be happy you play disc golf, but the 10x engineer makes more PRs than you. Which do you want more.
What I hear is you envy somebody else choices, and want to vilify them because you can’t compete with them because you made different life choices.
It’s like you are mad that Serena Williams did so much better than you did, but you only played tennis on the weekends with your friend.
Personally that sounds like a new circle of hell but I've had people ask me to bring back Jira for a project I was managing so there are truly all kinds.
A lot of people choose to be mediocre developers, but likewise a lot of people try very hard to be good but simply don't have the cognitive capacity or organization to excel.
(Cognitive Ability) * (Engineering Ability) * (Problem Solving Ability) * (Attention to Correct Details) * (Eagerness to Labor and Work)
There are real 10x engineers. And there are also 0.1x engineers. And plenty in between.
And lots of things impact job performance. Burnout, life satisfaction, interesting problems, ...