Artness - both as term and as response to excellent post...

I was struck by the quality of comments to a post of mine (selling out) that I thought we should take it up with a new post.

Here's the excellent query material:
Is the artness of art happening at the time of creation, or at the time appreciation is posted? What about works that are neglected and then discovered? Or lauded and later rejected?

This is huge for me as an artist: I feel I must NOT be too swayed by feedback, critique, etc., in my work. So even though I will be changed by input (yes, there are plenty of studies about how being studied changes the subject being studied, but I think this is different), I must NOT change my final product.

But the second part of this feeds into artistic voice. Over time producing multiple pieces of art, my voice should grow or at least change.

Those wonderful products that, over time age well are proof of art as useful, as transformative over time. The first part: works neglected, then discovered. This is so true for dead artists, think Van Gogh. The second part, whoopee you get the nod, then fade to obscurity.