> So on average, the other team members complete about 3.2% of the work, and he does 71%.
Without further context, though, those numbers are meaningless. There's been spans in my career where those sorts of numbers would apply to me but not because I'm an nX developer but because, e.g., a lot of the stories were related and it made sense for me to do them as part of an ongoing sequence whilst the others handled, e.g., bug fixes in other areas.
That's not a fair characterization. Did you read his post? He said,
> In my direct team of 10 people, myself included, I have completed 71% of all story points in 2022
So on average, the other team members complete about 3.2% of the work, and he does 71%. At least in relation to his team, he's ~20x in output.