I have to agree, in fact I wonder why would they even bother marketing it as a way to share and collect stories instead of proposing it as a more visual alternative to the main app.

I have the feeling that at Facebook they tend to half-ass things, like Home or the redesigned Newsfeed. They release an half-baked product and then let it rot for months with sporadic under-the-hood updates (I actually wonder why the hell every single day the main app needs a 10MB update to do what yesterday could do without problems, but that's for another time).