How is Martinez falling relevant? He was kicked, and kicking people like that is clearly a foul whether they fall or not...
Appreciate the explanation though, at least it will keep people from claiming that having a shot from the edge of a crowded penalty box is somehow an advantage over a penalty kick.
Because inconsequential contact is not a foul I guess. To me personally it's still a foul, but Zwayer's explanation sounds logical to me.