This is just opinion about why I disagree with the article and its conclusions.

Theres a test that fails, but its a test. By its very definition, its a bit of an experiment and not painful. Theres failures that have actual negative consequences, and this might be what you'd like to forget, ie., the pain that the consequences of the failure caused. Not me, I want to relive this pain, I want this pain to be instantaneously linked to what caused it. I want to dissect the failure, learn its causes, drive the consequences into the subconcious, so when I encounter a similar situation I am reminded of my previous path that lead to the previous failure almost at an instinctual level.