I'm afraid this is similar to Apple caving into irrational user requests and brought HDMI and SD card reader on their laptop line back.
It's a classic case of listening to the customer who is wrong. (macrumors forum)
I use camera A LOT. In my opinion 5x camera is not meant for people who take photos. It's meant for people who like to use digital zoom (or as much zoom as possible), have a "wow moment" and then never looks at those grainy photos ever again.
Any optical zoom on a small camera has big compromises in terms of image quality. This is why "main" camera is called that. Optical zoom simply means, there is less light available for the image sensor.
With that said, I will (and have in the past) used telephoto lens on the phone for certain portrait shots (if I can't get closer and use the main camera). But if I look at my photos from the past month, I use 5x much less than I did 3x and there are much fewer good photos done with 5x than there were with 3x.