I've always admired Ninty for not caving to every single complaint, even if it was because of the limitations of technology available to even do patches. They fix legitimate bugs every now and then (MK7 Maka Wuhu exploit comes to mind), and make certain changes for the better from feedback (again citing MK7 as an example, considering the item hell that was MK Wii) for future games.
While I'm not opposed to the idea of patches themselves, I've seen some of my favorite games repeatedly destroyed from constant balance tweaking due to the loudest fan outcry, not because of actual issues. I don't fear what'll happen to Smash or anything, just would hate to see it succumb to similar fate.