Oh dear! I largely agree with the OP, but also with some of the other comments. First, one point of information. Despite the "BP/W" hype, they do NOT inevitably go together. Of my maybe 3000 dives with a wing, only maybe 500 were also with a backplate. The rest were with a soft-back harness, mostly the DiveRite Transpac II. I have backplates and do occasionally dive with one, but in general I find them cumbersome and uncomfortable. Great if you have maybe 4 tanks strung across your back, but not needed for a simple twinset. Certainly not needed or IMO desirable for a single tank.
I also disagree that getting buoyancy right is easier with a wing than with a jacket-style BC. Most people, for simple open-ocean recreational diving, find a well fitting and well chosen jacket BC much more comfortable and intuitive, and easier to dump air from. Wings come into their own in cold water, when the inherent buoyancy of your suit means you have to carry a lot of weight down with you and hence need a lot of air at depth to compensate.
For most of my diving here in Belize I have a very thin and non-buoyant suit, so have little or no added air in my BC at any point in the dive. For this I use a jacket BC, which is very streamlined - no flapping wing to get in the way and slow me down. And with a shoulder dump, it's very easy to dump air progressively without really thinking about it. I have never used a wing that is as easy and predictable to get air out of, and I currently own 10 wings of different makes and sizes and have used at least that number of other ones.