I do agree that a lot of nutrient companies have a lot of snake oil and lies on there shelves to gross more money with stuff that is insanely over priced we agree on that i think but some things do work and work well, ya see when planted in the ground they will be amazing without any feed because they are taking up all they need from the natural soil but when growing indoors you need A1 products that doesn't mean the highest price tags just good nutes to live up to what nature provides automatically
All the additives do have benefits for the most part, but are you going to notice a difference worth the money you spend, probably not, especially if your a smaller grower with less than 100 sq/ft of canopy.
If you can read the label, and the price tag, and the analysis for example says 97% water or 3% <ingredient name> then you should consciously know you're purchasing water in a fancy bottle with 3% of the chemical you desire.
Honestly if you read the labels you know if its bullshit or not, simply look at the analysis. I achieve these results with just Armor Si (pH UP) & MaxiBloom. (Leaves on this strain turn purple/black, it is not N toxicity)