Running

Is there any counter science to it? Have people here used it successfully?

Obviously my opinion isn't science, but I found the large volume of slow running to be boring. I think it helped with certain aspects of my performance, but at the cost of enjoyment. And the loss of enjoyment in training puts a lot of pressure on the times that you do want to perform.
That is to say, if you don't enjoy training and the race you're training for doesn't go well, it can really fuck with your motivation to continue.
I am a pretty crap runner though, and it really comes down to how you like to train. I hated having to plod around on days when I felt good, and wanted to capitalise on what felt like good form. On the flip side, I'm a complete div who almost always fails to taper properly and have sabotaged many of the big races I'd hoped to perform well in (from a personal point of view, I'm never going to be on the podium!).
Another point is that even doing it for a little bit is really good at demonstrating how useful lower intensity work is.