I don’t even understand how that “not ok” drawing would work. Solid objects can’t coincide and all that, yeah? So how can the tip of the pole be inside the cone, but the side of the pole be outside the cone, with the rest of the pole passing through the cone base?
I think they are trying to get ahead of edge cases like this that may occur on accident (I have not tried this to see if it works, nor am I advocating for this to be a viable scoring method)