Whatever the success rate is of achieving goals... that's really just one of the many "LoA" side effects, not LoA itself. Duh. And it largely depends on how people go about it anyway, and we all know how good people are at understanding "LoA"... just look at your own article HAHAHAHAHAHAH (it's pretty damn funny to be honest). Most are looking for shortcuts when they set goals. That's still "LoA" btw... when they don't achieve those goals.
It's curious that people who believe in a LOA are critical of those who don't and believe them to be close-minded. I have presented a lot of new data such as the erroneous science and the data showing that acting as though you had already accomplished your goals was detrimental to you doing so. Yet, LOA proponents do not look at this with an open mind and reconsider their belief system. In this way LOA is akin to a faith-based religion, except that religious beliefs can't be disproven.
How To Calculate My Law Of Attraction Number