AHughes,
They're not doing it for .5 % of their members, or 2 people out of 400. It's far more prevalent than that.
An element of the motive may be generational.
Some of the young kids at clubs hit the ball remarkable distances and the older members see how they ignore many, if not most, of the features meant to inferface with their game.
Others see what's happening on TV.
Others, who host events, are astounded at where the players are hitting the ball on their home course.
My father, Joe McBride, William Dear and others were superb golfers, having played in many U.S. Amateurs and U.S. Opens, but, when they were in their 70's they never hit the ball the distance that my friends in their 70's are hitting the ball, and none of them are anywhere near the player that my dad and his peers were. These are fellows whose handicaps are in the teens.
Many of the young players where I play hit the ball so far beyond the features that it's ridiculous. And, some of the older, better players are also hitting the ball a mile.
The advantage to the long ball hitter is no longer incremental, it's exponential.
There is not a course that I know of that hasn't either lengthened their tees or are about to lengthen their tees in order to present the challenge off the tee as intended by the architect.