I read pages 5 and 6, but saw no mention of container growing (unless it was on a page I did not read). What I took away from the article is the myco does not produce any noticeable benefits because most soil people use already has plenty of microbes, or the products they use are 'trash' more or less.
This does not address some soils might be lacking, hydroponics and inert media, or products that DO work... neither is it specific to container growing.
As for the Biological control section, I have proven to myself, multiple times, using bennies for biological control does indeed work, and anyone that grows in DWC can verify this. Because of where I live and my local microbial environment, my DWC buckets get slime very quickly over the course of 48 hours if I do not use bennies. All I have to do is add Aquashield (liquid chicken shit) twice a week and I have no pythium issues, even at upper 70* which is unheard of for DWC without bennies. Not only do the bennies prevent slime, they allow you to run higher temps and they can suppress algae blooms from light leaks.
I have also proven to myself in my garden, my tap water WILL make both Aquashield and Heisenberg Tea ineffective, because I get immediately slimed as if I used no bennies at all. But treating my water with aquarium tap water conditioner neutralizes the chloramine with sodium thiosulfate, and the bennies do their job and roots remain slime-free.
The biological control is accomplished by having such a diverse population of microbes (many guilds of species as the article would say) so that no one species (pythium) can become dominant. All that said, I cannot figure out if the paragraph is talking about fungi specifically... but a combination of fungi, bacteria, and nematodes are used in Heisenberg Tea and it is very effective at biological control.
https://www.rollitup.org/dwc-bubbleponics/361430-dwc-root-slime-cure-aka.html
I also have an issue with the Compost Teas section, because they can be brewed at home using consistent variables and a consistent recipe with ingredients that many people from the community agree are effective because they can actually see the roots recover.
Now, this might all be a moot point because the article seems to specifically talk about soil growing, but I do think it is important to make the distinction between mediums and grow methods when talking about bennies. All I am trying to do is find out why someone would say bennies don't work in container grows because I've never heard that before, and also say bennies do work to control root rot in hydroponics, and most likely soil too honestly. The principal of a diverse population of species preventing any one from dominating should apply regardless of media.
Thanks for the read.