You are assuming that every iOS device running iOS 7 is experiencing the same issues. This is not the case. I for one do not have a problem with my battery nor does my safari crash/freeze (come to think of it, it hasnt ever). My iphone 5 has re-sprung a few times here and there but it's not a daily routine. When I go to settings it does dump me back to the springboard at least once a day. I just shrug and carry on.
There are 1000's of users out there on iOS 7 where the experience is positive. They are not going to come here to "check in" their experience.
The symptoms are harmless for you because you use a device with 1GB of RAM. There is a lot more buffer for memory leaks than with other devices.
Devices with 512MB crash a lot faster when apps start to leak memory. Yesterday, I listened to three albums on my 512MB iPod and each time the music app crashed. I was unable to listen to listen to a single album without my iPod crashing.
It doesn't leak all the time, but when iOS7 decides to leak memory it leaks like there's no tomorrow.