[engendered]

but it's wrong to generalize it as a solution for everyone

This is the fundamental flaw in virtually all quick-fix lifehack kind of pieces -- they project personal habits and failings generally, and then make broad claims about how to fix their own issues. It is the alcoholic telling you not to keep alcoholic beverages in your house.

I feel absolutely claustrophobic on a laptop with but a single work surface. And it isn't because I need multiple unrelated things fighting for my attention, but instead because I need maximal information for the singular thing I am working on. The flow of using all of the pieces of information is much higher -- for me -- when I don't need to task shift, shroud other pieces of information, and so on.

Docs/requirements/protocol specs on one screen, IDE on the other at the minimum. Realistically I usually like the IDE itself on multiple screens, inspector/project structure/source management on one, text editor on the other. Sometimes I split the text editor across multiple screens.

But that's personal habit. As mentioned I find working on a laptop absolutely crippling, though I have no doubt that there are people for whom it is ideal.