The pie is not retarded, if anything choosing between predefined answers that are written out in length is more so. And the reason is so simple and obvious, it should have hit you with a iron bar while writing your post. Its not fun to read pre-defined dialog and then deciding what the "intention" of that dialog line is and repeat that for all choices and every single dialog line.
Example - Of a dialog choice
Good system [I want a Bargain (evil)] + Dialog plays out to do that.
Bad System, [Give me a Bargain, because otherwise i am going to run your head down your spine and have your legs walk out the store without your body attached.] + You hear the same line being spoken by your character, sleep inducing. You already read it if *BEFORE* you chose it, after all.
Maybe you see why the pie is the better choice now (though i guess you are now going to post how the pie makes that 1 in a billion choice so much harder to specify ;p).

While it makes some situations a bit "edgy" thats better than having to read all the dialog in advance and then having to HEAR it all over again to boot.