It's funny. There are threads and complaints on how much wasted space there are in iOS 10 but when there's an example of efficient use of space (clock and notifications on the left. Media controls on the right vs. jamming everything dead centre on a landscape ipad previously) there are people who don't like that too.
To be clear I'm neither defending the old or new design, nor saying people can't complain about either design. Its just the perfect illustration of "damned if you do, damned if got don't". It's simply not possible to make everyone happy.