The test is asking whether the invention is an adequate distance beyond or above the state of the art. The state of the art at the time had no idea of such a simple one-click method - if it did - why wasn't it invented ? The fact it can be implemented so easily is irrelevant to fundamental idea that its innovative, non-obvious and unique. The best ideas are usually the ones no one see's and yes I am a front-end dev so I deal with more interaction components than anything.
Patents do not protect development effort - they protect novel, non-obvious and useful concept's. If they protected development effort - it would be a requirement to actually develop the idea and there is no such requirement and indeed many inventions wouldn't be possible to protect if such a requirement existed - that is, you must fully develop the invention before being granted protection. You're contention that because something is simple infers that its not patentable is incorrect in my mind.