I had a friend who is a semi-pro photographer over at my house this weekend. She was lamenting on not being able to set the aperture on her iPhone camera to try a shot. I showed her my M8, and it's full manual mode. I then showed her some of the other stuff as well, like ufocus and zoom blur. She said, man that's easy, it takes forever to get the zoom blur effect on her dslr. I then showed her the ease of putting together some zoe videos, and she handed the phone back to me, saying get this thing away from me! It can almost do everything I've been trying to learn to do with no effort!
From my own experience, it seems the majority of the people complaining about the camera having problems with over exposing the sky in photos, doesn't know how to frame a shot well. Cameras are dumb when it comes to white balance and exposure. This is why on even your really expensive cameras, you can adjust both settings on it, as the camera just won't know what things are supposed to look like to us. Most semi-pro cameras and up come with special built in filters, called a ND filter, which help even out the contrast issues that happen in landscape shots. This was one of the selling points for my Canon G7 back in the day, as I wanted to get nice landscapes without over exposing the sky, but not have to buy a dslr. I've found I get nice blue skies in my shots on the One, but sometimes I need to tell the camera where to perform it's AE/AF. Which is what I'd expect, the camera doesn't know what I want my picture to look like. It's just a tool, not the photographer. I've found I only really need to select my WB when outside, and select different points in my framing to get the exposure right. It takes all of 2 seconds to do this, and get the shot you want, and most of the time, I don't need to anyways.
While the htc One camera at first was a slight concern, based on the reviews, for me as well, I found in practice that the camera, combined with the photo gallery and zoe videos, has become one of the most compelling features of the phone. It makes taking pictures fun again. Taking a variety of photos, and videos, and putting together a zoe video, is so easy, and produces such a fun and fresh way to remember your events, you won't want to use another smartphone camera. Just forget the stupid 4MP spec as it is not telling the whole picture. The camera is outrageously fast in taking photos, focuses fast, has amazing low light capabilities, and the quality of pics is amazing. I've also taken some great late afternoon shots with ranging contrast that really caught the sun coming through the trees in my shots, while having the right exposure on the foreground image. You just have to keep your expectations in check. If you want to be able to badly frame shots, and not give too much thought, and count on having the extra MP to correct your bad shot, so you can zoom and crop, then you might be disappointed. I've cropped photos, and they still look fine, you just aren't going to get CSI level zooms like on a 13+ MP camera.