In Battle Royale having to press down further to fire a shotgun, whilst an enemy is right outside the door ready to spray you in the face is frustrating and really puts you at a disadvantage.
However, I am torn on adaptive triggers in Battle Royale and multiplayer games in general.
In Save The World, this feature is greatly appreciated as it gives a more gritty and physical feeling to all the weapons you are holding and the crazy beams and bullets they are able to shoot. Adaptive Triggers here are implemented in a similar way to other shooters so far, but the addition is a nice plus point for Save The World.
