Holy smokes. That's quite a lot to remember for something that "just works, like magic".
I also recall that bending it back is a bad idea as that can cause the screen to crack.
In any case, it would be nice if the 6 were a bit more structurally rigid, if only for peace of mind at this point.
How would the screen crack by bending it back using NORMAL USAGE techniques that bent it in the first place? That doesn't make a lot of sense.
The OP never said that his phone doesn't work anymore. Did he say that in a subsequent post? So it does just work, like magic, there is no reason for people to get so worked up by all this.
Just don't use a screen protector in case it is true that it creates extra stress on the device (i don't believe it, but it may be on the internet, so who knows?), and rotate the usage and storage of the phone. Don't you rotate your tires?