Its safer for rookie operators or home owners renting a skidsteer for the weekend. It prevents you from spilling dirt, rocks, and concrete back onto yourself if you don't manually tilt the bucket forward as you lift the arms when loading trucks.
This actually happened to me when I first ran a Bobcat. We where demolishing a wall from the inside of a old auto repair shop. I had been loading the bucket with blocks all morning for my boss to load into the truck. I was stacking the blocks way over the back of the bucket for him. Well he decided I should give it a try while he took lunch. I assumed it had self leveling like skip loaders I had ran in the past. Well I was wrong. I dumped about 8 blocks on to the top of the cab. Luckily I didn't get hurt. But I have had baseball size rocks fall from the bucket and hit my knee before and it sure does hurt. I cant imagine what a cmu block would do. My boss then pokes out from around the corner and says “ oh, your suppose to tilt the bucket forward as you lift“. I thought to myself, that would have been nice to know 30 seconds ago. Lesson learned!!!
Me being an experienced operator now, I find that on my 963 that I do a better job at leveling the bucket while loading trucks. When I turn the leveling on it prematurely tilts the bucket forward sometimes spilling a little dirt. Not allot of dirt, but just enough to make a little bit of a mess on someones driveway at the end of the day.