Steve Kline,
Your example is flawed
While you indicate that a few golfers with handicaps between 1 and 4 can outdrive you, and that your average drive is 270, the marginal difference of 0 to 20 yards isn't significant in terms of the ability of "collective group" to interface with common architecture/features.
In addition, it's been my limited experience that a +3 handicap isn't outdriven consistently by a 4 handicap.
That a 4 handicap may occassionally drive the ball 20 yards farther in the fairway does not support the premise that higher handicaps consistently outdrive lower handicaps. Abberations do not make universals.
If your average drive is 270 and they're 20 yards longer, averaging 290, than none of you are interfacing with the intended architectural features off the tee, unless your club has added about 50 yards to each hole. And, if your club has added 50 yards to each hole, I"d be amazed if the features in the DZ are limited to less than 10 yards in depth, which leaves a margin of + - 5 yards in the DZ, hence, all of you would be interfacing with the architecture.
You're confusing your ability to improve your scoring through added distance with your group's ability to interface with the architectural features in the DZ, and, you're ignoring the bulk of the residual membership who don't drive the ball on an average of 270 yards.
The general premise that handicap is inversely proportionate to distance is valid. The higher your handicap, the shorter you are compared to the lower/lowest handicaps.
Understanding the general validity of that concept, architects seek to forge a balanced challenge based on that concept.
Even the ODG's believed that DZ's should narrow as their distance from the tee increased. And while the narrowing of the fairway may have been gradual, the bunkers/features in the distant drive zone weren't miniscule, allowing only the purely unlucky to find them.