I hate it as well, every damn time I update app I'm back to the home screen and what with it asking for my damn password so often. Stupid inefficient store, it's really crap tbh, it's slow as hell, everything is laid out badly, the categories are so basic, the main app pages aren't even retina quality and the info on the app pages are utterly terrible.This is one of those inexplicably annoying features of Apple products. I love them and give them money, but find it utterly stupid. However, I'm sure you'll shortly be barraged for questioning it, so I apologize in advance.
They fixed it badly, they should have kept the vertical layout which looked much better and just let you scroll down to release another fifty apps to view. Have you noticed just how far you have to actually swipe to view more apps in the present system?, they trained us with photos etc as to how far to swipe to move things on then with this you suddenly need to do gigantic jarring swipes to see more apps.Same here. I don't always do the upgrade all and only want to upgrade a few important ones (low bandwidth) and hate tapping one, then pressing home then tapping app store and starting all over. Why do I care to see it install, I will go run the app when it is done.
Another issues (that was finally fixed) that has annoyed me from day one and Apple did not stick to their own ui guidance was the app store scrolling between pages. You had to click the little arrows in the corners to change pages and I was always finding myself trying to scroll left or right. But they did finally fix it years later.