Actually, it does. The likelihood that ESP actually works is significantly less than the likelihood of "the decline effect", which is explained by a number of perfectly rational factors (touched upon in the article.)

If you want to claim that "ESP is bullshit" (as you and I both do, I imagine), you somehow need to account for those (rare) studies which oddly enough seem to support an ESP effect at a statistically significant level. "The decline effect" goes a ways toward providing this explanation.