It works sometimes but I think the main reason it works is because of the placebo effect.
If you read the thread and saw the 'What will happen next' part telling you what will happen after you've done the technique notice how it doesn't mention you might just wake up and have no LDs? It only says you'll have LDs or FAs and this is why I think it works sometimes. You expect to have LDs and FAs after doing the technique so you actually get them.