I didn't watch the videos, but I decided to read the articles for kicks.
I have no idea what the products that this guys sells contain, which automatically make me avoid it like the plague. No "mystery" ingredients get to go in my tanks.
However, it's striking how this looks an awful lot like some of the bacterial driven Ultra Low Nutrient Systems (ULNS) like ZeoVit, Prodibio and others. I wonder if the "pH rocks" are some form of zeolith that bind acids, thus raising the pH. Sounds inherently unstable, but who knows. Change the flow rate, and you change the pH.
Also, I've never seen the use of activated carbon as a carbon source for bacteria like this guys proposing. Enough carbon in the early stages of tank development could reduce ammonia spikes. As mentioned, GAC in sufficient quantities pulls out organics quite nicely. It won't do it for very long, but that month or so in a new tank might buffer the fish. It doesn't give you a great cycle, and it's hard on the fish, but it could work.
The scientific explanations are absolutely horrible, no doubt. I certainly wouldn't risk it myself, unless there had been hordes of people trying it. Of course, the same could be said for the other ULNS systems out there.
I remember reading some of the early vodka dosing threads on various forums, and I think I read about Zeo about the same time I stumbled across the Hiatt site. The difference is that there are LOTS of tanks using the Zeo system and others with quite a bit of science behind it, but initially it looked a little snake-oily as well.
Who knows? Maybe this system actually does work in a sloppy sort of way. Stranger things have happened. However, based on the explanations on the site it doesn't instill much confidence!
Cheers, Josh