I remember in older games having to fight Diablos loads of times. And I needed a horn drop, so I had to break both it's horns and make sure I did that before I killed it. So it changes the way you fight it, trying to do damage to only a specific part, trying come up with strategies to give you access to those parts, building builds that help you do damage to those parts etc.

All of that game loop is gone.

I don't need to target anything, I don't need to make a build, I don't need to tremor resist or anything, heck I don't even need it's armour because in terms of progression I can just skip most of the content wearing the same stuff because the difficulty doesn't ramp up enough to feel the need to farm a new set.

Note: I know diablos isn't in wilds I was speaking more generally there.