It's very true that a 3B prop should have a better ground clearance. On my plane it is an extra 1" clearance.
Talking to C182 owners with 2-blade props there seems to be those who have had a prop strike and those who are going to have one!!
You could say that about just about anybody.
A C182 is used to go to grass strips, due to its short field performance, but it still has a propeller on the front of it...