The prop's (for any position along the blade) AoA is vector sum of the blades rotational velocity, and the aircraft's forward speed. The blade section has a much lower speed near the hub compared to the tip due to the smaller diameter for the same RPM. Hard to show with a text a diagram so bear with me...
HUB vs TIP: Vertical lines represent rotational speed downwards, horizontal represents forwards speed. Slash is prop section. Imagine a line between the full stops to picture the resultant airflow vector.
hub at a greater AoA
.\
|
|
|
|__.
tip at a lesser AoA
.\
|
|
|
|
|
|
|
|
|__.
If the tip is at some reasonable +ve AoA, then the hub is at an excessive AoA
If the hub is at some reasonable +ve AoA, then the tip could even be at a -ve AoA