Perhaps true for you, but many euro mtb pros are having their bikes made with shortest chainstays and higher BB's.The ability to shorten stays to 14.5" on the Morpheus (dirt specific frame) is pointless. Anything much shorter than a 15.5" stay on 26" DIRT JUMPING frame will effectively hinder dirt jumping.
So the thing to take away from this is that everyone has a personal preference.
For instance, a 63 degree headangle for a downhill bike would ONLY be useful to someone who could effectively use that geometry. A person who is new to downhill would not do so well on that type of bike, and could not use it to its full potential.
The same can be said for DJ bikes, if a person can throw triple tailwhips from 10ft above a 6ft lip, I am sure they can do it the same on a bike with 16"stays than on 14.5" stays.
Above whether it rides well, shorter stays are stiffer stays. And I have never met another rider who didn't want a stiffer bike.