>>22028128My big guess is that it's for Lando-T coverage and other assorted flying coverage. But as we see:
-1 252 Atk Lopunny Ice Punch vs. 252 HP / 252+ Def Landorus-T: 176-208 (46 - 54.4%) -- 3.1% chance to 2HKO
and since its mostly scarfed
4 Atk Landorus-T Earthquake vs. 0 HP / 0 Def Lopunny: 172-204 (63.4 - 75.2%) -- guaranteed 2HKO
Bounce is mainly for fighting coverage, but mostly for
muh dick 