I think the engineers who work for B&W are no different than many of us.
They went to universities and studied their butts off like all of us. They graduated with real degrees like the rest of us. They enjoy music and good sound like all of us. And they differ in opinions and preferences like the rest of us.
Let's not think that our opinions and preferences are the only ones correct.
If folks buy B&W, Wilson, Martin Logan, Magnepan, Def Tech, etc, after they have auditioned other speakers, they are not wrong and we should not make them feel that way.
Great point about buying speakers with great on-axis, off-axis, power response, etc. In the end, don't expect everyone to buy speakers if they don't like the sound of the speakers, even if the speakers have great "measurements".
Just one example is a member who bought Salk speakers based solely on measurements and user reviews from other forum members. He basically couldn't live with their sound. So he ended up auditioning other speakers and ended up buying KEF and selling the Salk.
This example could be for buying any brand of speakers solely based on measurements from Stereophile or Soundstage.
In the end, people will keep the speakers that sound great to them. It's the same destination, just different paths.