Some I definitely agree with (mixed font casing), some I don't, and some are plain bugs which are annoying but not a question of sloppy UI. There's a lot slipped through that it's slightly inconsistent, but there was plenty of inconsistent design through iOS1-6 as well and with OS X.x in it's various releases.
Design over a large product like iOS or OS X is hard, it takes time to get all the edges smoothed down and given that iOS 7 is probably the result of a year to two years of work it's not a surprised it's rough. If it's a bug (or a UI niggle) report it to Apple, they may or may not be listening but it's a better solution to highlight it with them directly, as well as on Tumblr.
Design over a large product like iOS or OS X is hard, it takes time to get all the edges smoothed down and given that iOS 7 is probably the result of a year to two years of work it's not a surprised it's rough. If it's a bug (or a UI niggle) report it to Apple, they may or may not be listening but it's a better solution to highlight it with them directly, as well as on Tumblr.