You are a rabid poster, kschachn.
The problem with "standard tests to show efficacy" is that:
1.) They are extremely costly to perform
2.) The test are really just "models" attempting to replicate a real engine, and thus could still be refuted by anyone.
So it comes down to the fact that the makers of any Bio-Tech, and nearly any business that produces goods, have realized that: It's probably not worth the risk to spend so much capital going through the rigors of these "standardized tests". Because in the end, you'll either buy our product (for whatever reason) or you won't. And a set of rigorously produced data isn't going to sway the consumer that already has made up his mind.
Therefore, there is a HUGE investment to be made in an attempt to "win over" a few customers....and the people who write the checks and hold the purse strings, have decided to hold onto their money. Not because they know their product is snake oil, but because there is likely their ROI is negative.
You've already made up your mind that additives are garbage. So, please move on.
“There is a principle which is a bar against all information, which is proof against all arguments, and which cannot fail to keep a man in everlasting ignorance—that principle is contempt prior to investigation.” -- Herbert Spencer