Uh, no? I mean, the software you write _may_ be the reason, but it's in no way implied by the fact that you're a "vi user", I've ran fairly large pieces of software from old MacBooks with little problem, though _yes_, I did some data mining stuff that would kill the poor little things - but not every "vi user" ever does that. In the largest deployment I've worked with even Vi would be ran via SSH on a remote VM.

It's when you bring out Photoshop or (gasp!) Blender or Unity, or doing something else that requires serious memory, when things start getting dicey. It's a specific sort of professional they mean, otherwise almost every employed person would fit.