You are being very cryptic. What kind of negativity you mean? I am really having hard time distilling what kind of negativity one must embrace to accomplish what goals? I agree that negativity can be a perfectly valid driving force, sometimes, not everything needs to be about happiness or whatever.
But, music is not a competition, and there's no perfection. What kind of perfection are you seeking? Let's take jazz as example. Perfecting that language, and driving it forward is all good and respectable activity, but it's nothing to be too serious about. It's far from being a universal language, a rather obscure dialect of one, at most.
Music is also an abstract language. If you try to use music to "say something", I think it's poor choice of medium. You just can't compare it to words or pictures. That's the beauty of it.
Driving music forward, and being unique, is funny thing. It's a respectable goal to say the least. But if you take old music, then new music built on that same tradition, that has been "driven forward", and compare them. Is one better than the other? Is the new music more... wise? I wouldn't say so. Is the new music more valuable to humanity, than music that is just based on emotion and enjoyment (perhaps "naive")? Not so sure about that either. Intelligence does not equal wisdom. The beauty is somewhere in the social context, or in the process.
If you try to build a castle of music, make sure to include windows in the floorplan. The dirt and rot out in the world tell so many stories, you don't wanna miss out on that. (this refers to something you wrote in in another thread)
Sorry if this came out as hostile. It's not intentional although I must admit being a little triggered by OP's attitude I perceive as elitist. I'm honestly curious, if you could elaborate on your thoughts. Burning passion to perfection is always something to be respected, even when we might disagree on the goals or methods. I am lucky to have a day job where I regularly encounter the weirdest specialists, niche hobbyists and personalities. It is often baffling how people can be wonderfully passionate about obscure or even seemingly mundane things. I often don't agree with their world views or whatever it is they are fueled by, but always take great joy and fascination from the existence of their passion whatever that may be. All that serves in the fight against apathy and ignorance.