Apple isnt slipping one bit, they are right on time and if you want to be honest, may be at one of their highest points with a new product like in the iWatch and then the beastly Mac Pro. They are on target and are where I personally predicted them to be.
With the RAM issue, yeah we may want to have 3 or go GB of RAM but when you actually look at android, how much of that RAM is actually free to the user? You have these horrible interfaces like TouchWiz from Samsung thats taking up 1.8GB alone and now you have about the same amount the iPhone has so we are back to sqaure one.
The bending issue, please look at how much stress you have to put the phone to in order to bend it?! Im pretty sure you can give me any phone and with my full potention and strength I would be able to bend a phone or possibly break it.
Every new version of iOS will be buggy, we already know Apple isnt going to sit around and let their stuff be buggy, they want perfection and im sure we will see soon updates and the apps to be optimized for the bigger screens and all these negaive threads would go right away.
Waiting on my 6 plus preorder here. My current phone however is a galaxy s4. On my s4 the phone just uses slightly over and under 1gb of it's 2gb of ram. So a lot more of that is free than you are suggesting. At least on my android.