Which totally undermines your whole argument, because those "good current skiers" have a quiver. And, those "good current skiers" ARE NOT skiing race skis to go charge 30" of snow.
Lets not kid ourselves either. Really good skiers were killing it with 220cm race sticks on seriously steep, nasty terrain, but they were doing it with jump turns and typically coming to a full stop between turns. These days they are attacking those same lines at 70 mph because they have a controllable ski.
Quivers have become typical because the expectations of ski performance have changed. In the straight ski era, the only choices you had boiled down to length and flex, and almost everything you could do off-piste on an SL ski you could do on a DH ski with a similar level of effort. Given what we now know about skis, both skis were so ill-suited for the terrain we took them on that it would be like trying to determine whether a Ferrari or Lambo makes a better off-roader. Ludicrous unless that is the best choice you have.
The old rule when I skied was follow the tips.....jump turns got a wack with a pole. Carve the tip and follow with the rest of the ski. Didn't matter what you were in.
When I ski I see a lot of good skiers (a lot more than the old days) what I don't see is a lot of great skiers (a lot less than the old days). That's the difference in what is required to ski today vs the old straight sticks. You notice the difference when they get in trouble.