Trevor, did you try to move the blades by hand? They look like Flex-O-Fold props, and the blades should move freely from fully folded to fully extended. Just looking at them when at rest does not mean much.
The range of motion can be limited by marine
growth in the gears beneath the anode and cover plate. With some care about dropping bits one can disassemble those parts
and clean the gears while the boat
is in the water