I see your gripe, and customers being promised demo's after every sprint is a bit over the top in many cases. Especially large projects. But to assume no real

I see your gripe, and customers being promised demo's after every sprint is a bit over the top in many cases. Especially large projects. But to assume no real engineering goes on discounts the fact that aside from stories there are "detailed" requirements, modeling, and designing that still occurs. If your team is skipping this, that's a problem.