Why is smashing lame ? It is all about entropy. It takes talent to smash junk. And it can be creative and almost artistic. It is also a reflection of the inner self, that uninhibited soul that lives within and wants to rebel, to be let out to follow his course. Given the right mindset smashing can even be romantic. It is almost a form of free verse, it has a poetic quality once you surpass the superficial.
You bring up a very valid point. One I ponder regularly. It's about art vs. craft.
The question is, if good art involves very little craft, is it still good art?
IMHO, the answer is yes, it is. Especially if it gets the message across as well as smashing things does.