[mhartl]

Those who disparage "X for Y" descriptions misunderstand their use. When you have only a few minutes (or seconds) to pitch your idea, being X for Y or the X of Y is an effective way to give people the gist and pique their interest. Only then does it make sense to go into more detail and explain the full scope of your ambitions.

[anateus]

Exactly. Only a minority of companies that use those pitches used the same phrasing in their initial creation process. The goal is to solve a problem someone has, the "X for Y" is a shorthand for "don't take my word for it that people have this kind of problem, look at this very similar situation".