I'm 100% with you bro but I'm really trying to break this misunderstanding in Coco as I have not seen anyone clean up this mess so it's kinda my
mission on my next two grows.
So coco coir is classed as hydro and the first question asked when growing hydro is sterile or bennies but nobody asks this on Coco? But I believe it's the maid devide and misunderstanding.
I fully agree with you on measuring the run off being the way to go in coir but the issue I'm seeing is the guys growing with beneficials can grow at 5.8 as I'm guessing the bennificials manage the plant poop and feed back to the plants. But telling people in pure coir to PH at 5.8 and don't measure run off is absurd.. PH is key to growing and in any form of growing it should be understood at least.
Lastly I'm with you again on the minimal EC.. it's been proven that high ec slows plant growth I've seen it time and time but you can train a plant to survive in salty conditions so later in flower it will grow fine but still a waste of nutes as it will grow as fast as it can considering other parameters and genetics.
This is just imo but I think I'm getting this Coco track straightened out
Brother sorry for the long one on your gj