I don’t disagree with this, however, consumers generally believe that a ‘higher megapixel’ count means a better camera. And that’s exactly what companies like Samsung want the consumer to believe, because they realize that consumers generally don’t understand what a smart phone camera is composed of. When you start discussing the Technicalities of exposure/optical zoom/telephoto lens, etc., None of that translates anything to consumer that doesn’t understand what it means, but if you notice during these keynotes, they focus on the mega-pixel count, because they (consumers) believe a larger number symbolizes a much better camera.
Samsung has actually made good use of the high MP count by using Pixel binning to capture more light. And judging from reviewers photos, it seems to work great.