Do you need stiffer boots for artistic figure loops?

The figure loops that artistic folks do (is that what its called?), do you need a stiffer boot for those? would a stiffer boot help?

I've got OG's with some reactor plates, would i be better attempting these on a stiffer boot? (i got some 120's with arius plates).

or does it not matter?

was watching this tutorial and was wondering about it: https://www.youtube.com/watch?v=6NxPIR81v98

thanks for fielding my curious curriosities!