Actually the chemistry doesn't seem very hard at all.
http://chem.libretexts.org/Core/Ino.../Group_17:_The_Halogens/Chemistry_of_Chlorine
Reactions with Water
Usually, reactions of chlorine with water are for disinfection purposes. Chlorine is only slightly soluble in water, with its maximum solubility occurring at 49° F. After that, its solubility decreases until 212° F. At temperatures below that range, it forms crystalline hydrates (usually Cl2Cl2) and becomes insoluble. Between that range, it usually forms hypochlorous acid (HOClHOCl). This is the primary reaction used for water/wastewater disinfection and bleaching.
Cl2+H2O→HOCl+HCl"
They did state "usually forms " which is just like how you said likely forms.
Meaning you put chlorine into water , better chance than not, hypoclorous acid forms. If it didn't, your statement and the statement of that study would read "sometimes hupocholorous acid will form" or "there's a small chance the acid forms" or "if you're very lucky and all conditions are ideal, maybe you'll get hypochlorous acid"
For cleaning a cloner, pool shock at 3 pennies a gallon to "most likely get hypochlorous acid" is a way better option than "chlorine water named UC roots for $80 a gallon"
It's cloning. Simplest thing in the world. People stick cuts into cups of tap water and get roots.
I'll still run a side by side test with these but I'm pretty sure I wasted money on a snake oil product. I was intrigued because I like to be environmentally cautious where I can but I doubt these are game changing.