Yes, I have studied ballet. But I never got to the point of attempting more than triple pirouettes. Certainly not multiple turns in the air, which are mostly men's steps.
And how many of them can do them on both sides? How many even do three in both directions on stage?
I'm pretty sure he was talking about
single axels. And the point of the story was that not everyone could do them in both directions.
Triples? Quadruples?
And the speed of rotation is much slower than in an on-ice spin, let alone jump.
Look, skaters need to be able to do threes and double threes and brackets and rockers and counters and twizzles and loops in both directions.
Here are examples of how bilateral turning ability is taught and tested in the US. Check out the videos at the novice link especially.
http://www.usfigureskating.org/Shell.asp?sid=42287
Coaches and show skaters in group numbers are often able to do single jumps or simple spins in both directions. Single axels both ways starts to be an impressive feat.
But beyond that, double let alone triple jumps or fast sustained spins in both directions, is just not possible for probably 99% of the population.
Freestyle skating has developed to value triple jumps. Therefore it favors skaters who can jump high enough and rotate fast enough in one direction to turn three times in the air. Most people don't have the ability to learn those feats, so the majority are weeded out, first when they try to learn axels/easy doubles (entry to competitive levels) and then when they try to learn double axels/easy triples (entry to elite levels).
If you change the rules to require, say, single jumps in both directions at lower competitive levels (e.g., juvenile) and axel and/or double jump both ways at elite levels (starting with novice), you're going to weed out different people.
The total number of skaters who could reach elite levels might be comparable, but you'd change the look of the sport.
Triple jumps would become as rare as they were in, say, the 1960s, because you'd weed out kids who had the potential to learn triples the good way but quit when they couldn't learn single axel the bad way. And the few skaters who had the ability to learn both reverse doubles and good-direction triples would take longer to learn the triples.
Do you want a sport that concentrates on balance and doing comparatively simple things in both directions, like ice dance or corps de ballet?
Or do you want a sport that pushes the limits of the pyrotechnical feats, in whichever direction the athlete can achieve their hardest feats, like freestyle skating and ballet solo variations?
How about a compromise, where there are significant rewards built in for jumping and spinning both directions, more than is currently the case? Maybe even alternate requirements to put ambidextrous jumpers on an even playing field with high/fast jumpers.
E.g., in the junior ladies' short program, the first jump requirement is
*double axel OR sequence of two single axels, one in each direction
In the senior ladies' SP, the combo requirement could be
*triple jump in combination with another double or triple OR two double jumps in rotated opposite directions (edge change but no other turns or steps allowed between the two jumps)