It is still an effective tool for strength development. Just because one man does not like it, it doesn't mean that it is a bad tool. Do I believe that it is the best way to train for strength? Absolutely not, but I'm not willing to dismiss it as a "tool" either. It is hard for me to dismiss it when guys like Joe DeFranco and Bud Jefferies are getting great results with it. They don't use it solely for strength development, but in the place of repetition (strength endurance) work. The truth is that there is no single way to produce gains in strength best. You can look at the systems of JC Santana, and compare it to DeFranco's stuff and see clear differences. But what stands out of their vastly different training ideas is that they both produce outstanding results for their athletes. There is more than one way to skin a cat.