Rippon jumps are hot and do seem to be easier on the small, still stick shaped children. Lengthening your 'height', reducing your 'cross section' as explained earlier, plus the extra lift achieved by throwing your shoulders and arms up.
And perhaps the timing and biomechanics of throwing up your arms are more beneficial than screwing them up close to your chest?
11 year old Nikolay Kolesnikov from Khrustalniy premiered a quad Salchow in the Rippon position just half an hour ago on the IG account of #TeamTutberidzeForProgress
#СделаноВХрустальном! and this goes for all the basics of Kostornaya and Trusova too, up to and including their International Master of Sports distinctions just awarded.