I said literally nothing to the contrary, so I'm not sure what your point is.
In fact, if you really want me to expound upon this particular topic, I would say that I love it when unintentional things occur. Emergent gameplay, whether it's by design, or because of some exploit of the game's mechanics, is one of the best things about video games. When a developer can look at their own game and say, "What the fuck? How are they doing that? How did they even think of that?" - in a good way, mind you - I think they've succeeded in making a good game. I actually see it as a detriment to a game when, for the sequel, a developer looks at a mechanic and says, "This is just too much!" as Sakurai did with, for example, wavedashing. I fucking hate that attitude. Even if I, personally, don't give a flying whatsit about a particular mechanic, I think it's a damn shame when developers remove it for "my benefit", because it's too complicated or whatever. For shame, Sakurai.
See also: Quake's rocket jumping. But whereas Smash was sort of dumbed down for Brawl, rocket jumping has been embraced by certain developers. I'm actually not sure if it still plays a part in, say, Quake 4 (I've never actually played a Quake game, much to my shame!), but at least it's in Team Fortress 2.