Yeah I did watch that video. It is rather interesting. The one thing you have to remember is that when someone like that is saying "this is the best stuff, this is what you need", they are being paid to sell that product. But He is correct about a lot of what he is saying. The difference in what he has and the nutrients that I have is, my nutes already have all of that stuff mixed up in 3 different bottles in formulated proportions so that all I have to do is adjust the ratio of the 3 parts to get real close to what my plants need, rather than having to go through 12 individual elements(using different amounts of each) to build the nute solution from scratch.
Some of those things could be handy in some situations but I see it as being more tedious than necessary.