I don't think that's what the author meant at all. I think the author meant any sudden change in the visual field, e.g. cutting to the next scene, an outside shot, or whatever. It's an interesting perspective, but probably has a simple answer: when you dart your eyes, you already lose a fraction of a second and have to re-process everything. It's not hard for the brain to put things back together or interpret a totally new scene. In fact it probably only becomes tiring if it's at a strobe-like frequency, and extended for several seconds (dozens of cuts, several per second, sustained over multiple seconds.) That's something that we really don't experience, and which really does become tiring or disorienting as a visual effect.