Jim,
The trend is to attempt to build a course where even recreational women and super senior men can hit most, if not all, greens in regulation, and ideally, with similar clubs to male players.
As mentioned, why would those groups even consider golf with at least a couple of extra shots per hole that really have no strategy other than to advance the ball?
Until the last ten years or so (I was quoted on the subject in the WSJ ten years ago) forward tees were "under thought."
I agree with you, the math is daunting, but no reason not to try.
If a recreational female hits tee shots about 145 compared to average tour pro at 290, and you want them to use similar clubs on approach, the course would have to be 50% of the length, i.e. a 7200 yard course being 3600. For senior men and longer females, the ratio is about 60%, and 7200 would have to be about 4300 yards.
And the max length for the 145 and 170 hitters to reach all greens (on a normal day, I agree weather variations come into play) would be 36 shots at 90% of the tee shot distances, or 4700 and 5500 yards. 2 max length shots isn't very good either, so I tend to split the difference, allowing longer clubs but still allowing most holes to be hit in regulation. My forward and second tees (barring any junior tees that might be added) usually come out at just over 4000 and just over 5000 yards, because there is still some ego from playing "too short" and "too easy."
But my experience is, that after some initial resistance, they are universally accepted, often under the guise of "I don't need them, but some of my "friends" do, LOL.
So yes, a shot with no other goal but distance to complete the hole is to me, irrelevant.
Cheers.