My feeling is that this return to waterfall development model is induced by the app validation process imposed by Apple. I don't call back in question it's per

My feeling is that this return to waterfall development model is induced by the app validation process imposed by Apple. I don't call back in question it's pertinence and efficiency. I just point out that publishing an app has again become a significant milestone you need to prepare and be ready for. So it's not a matter of culture or free choice of developpers. It's a consequence of particular constrains.