He addressed your point in the paragraph before that. The paragraph from which you quoted was meant to show the difference between your point and the fact that the original research was indeed measuring software engineers.

My point is that I was very clear about what people I was referring to.

No need for all the "if by people you mean" rigamarole

Then your previous point is false, because "X helps Y" doesn't run counter to any promise that "X helps Z".

You said the second. You responded to the first.

Y = [experts]

Z = [noobs]

{Y, Z} ⊆ [all humans]