the privilege of ephemeral?

I find this article strange and interesting. Particularly the fact that Walker seemed to be distraught over the  dismantling of the piece and was not able to be present for it. It seems if the point of the work is ephemeral then one would psychologically enjoy that aspect of it or want to experience it fully.

The other issue never discussed in such articles is the luxury of being able to make works like this as most artists cannot afford to make a work that is ephemeral because they are trying to survive financially and /or if they do no one ever knows about it as it is already gone.

It is just a much more complex issue then this article alludes to.