X for Y is just a simple way of explaining something. Smart people can maybe make two leaps, but most people have trouble making a mental leap that's further th

X for Y is just a simple way of explaining something. Smart people can maybe make two leaps, but most people have trouble making a mental leap that's further than one step away from what they know. So you start with "X for Y" as a mental hook to hang their mental hat on. Then you can build from there. Whether it's actually an original idea or not depends on nuances of the space, that most people aren't use to talking about, unless they usually think of this sort of thing. So it's easy to be dismissive.