To the original post, I've not actually seen a review say that a hole was designed without regard to the way discs fly. Nor have I seen a hole that could only be played with a roller (not flying) or a thumber/tomahawk (flying, sort of, but not the way they were designed). Some can best be played with those throws, but none that can't be played with normal flight.
As to luck, my feeling is that it should not be the primary factor on a hole. A gap that's so small, at a particular distance, that the players for whom the hole was designed cannot hit it with a well-executed throw more than, say, half the time, is a poor hole.
When you stand on the tee on a good hole you should have considerable doubt as to what your score will be---but that doubt should be based primarily on your execution, with luck only a contributing factor.
As to luck, my feeling is that it should not be the primary factor on a hole. A gap that's so small, at a particular distance, that the players for whom the hole was designed cannot hit it with a well-executed throw more than, say, half the time, is a poor hole.
When you stand on the tee on a good hole you should have considerable doubt as to what your score will be---but that doubt should be based primarily on your execution, with luck only a contributing factor.