I so wish combos comprising more than one double jumps were prohibited because the ability to do such combos are not reflective of the skater's ability.
If they were prohibited, Yuna would be forced to replace her 2a-2t-2l combo with a 3l, which would mean that she would potentially garner 59.45 in base points.
Mao would be forced to replace her 3f-2l-2l with a 3f-3l, with a potential base point of 66.2.
Had this been the case, Mao would have had a fighting chance against Yuna, but as things stand, it's the GOE that determines who's going to win.
And GOEs only take into account things that Yuna is good at: speed. It doesn't take into account what Mao is good at: flexibility.
It looks like the whole system's been carefully crafted to make sure Yuna wins no matter what. It simply doesn't matter whether or not Mao makes history by making the first woman to suceed three triple axels in a competition