It depends. What model tractor do you have? The original comment was based on someone with a 2-series machine. However, some larger machines (4-series for example) have a link that can be turned such that the lift link and lower arm have some movement. I’m sure there are other tractor models with a similar feature.
That is not correct, see my post # 32. Either of my 3 pt. links can be lifted 4-5" with the 3 pt. at rest. They are designed to lift so if you hit something when running a brush cutter, other mower or ground engaging implement the implement can raise up to clear the obstruction.