I didn't read the entire article but I think it's a good idea. I went though everything when I moved the sewing room from the basement to upstiars. Much less room so I had to be more organized and specific on what I want to keep and to do.
I got rid of a bunch that really I just wasn't going to use. Everything got 'shook up' a bit and it made me see things differently. Recently I pulled fabrics for a Dear Jane and that was fun, got to see my collection in a new way. I pulled from all kinds of collections, sets and someday quilts.
For me, the reality is I only have so much room. I like the fabric I have so I figure I should use it. I want to be able to say I loved that fabric so I used it.... not I love that and someday I might use it.