Partially true but in my experience if you are cut off of WoW you will not find another way to procrastinate immediately. That's why there were studies that kids and teenagers being cut off from smartphones/tablets have found themselves more mentally healthy. You can search for those, they are out there.

So while I agree in principle -- that the inability to address one's problems is not fixed overnight -- it's also true that removing the distractions you crave the most can and will push you to healthier habits even in the short term.