You alleged that Messi benefited from HGH as you previously claimed "makes you bigger, bigger heart, bigger lungs, bigger bones, bigger ligaments & tendons and muscles", where is the evidence? Does Messi have a bigger heart and bigger lungs? Which explains he has one of the lowest workrates of all forwards/offensive players? Messi has bigger bones, bigger ligaments & tendons and muscles? This is indicated by what?
When you are sick/impaired, you take whatever that is needed to make you function normally. What is there to say?
If you are an athlete and you have a problem with Messi using HGH, petition to FIFA or refuse to play on the same pitch as he is. Simple.
https://draxe.com/human-growth-hormone/
I watch loads of boxing, football is probably my second sport in all fairness. Combat sports are full of PEDs and I took a massive interest in them a few years back, drugs are absolutely everywhere in sports. Oscar de la hoya, Shane Mosley & Evander Holyfield, who are two of the last 20 years top 5 welterweights, and a top 5 heavyweight of the last 20 years, have all been involved in HGH scandals, along with A-Rod, arguably the best baseball player of the last 20 years.
HGH works.
Messi definitely needed it to grow to a normal height, the question is how much it benefited him past this, if at all. People saying you can't be given technique, absolutely correct, but technique gets worse as you get fatigued, and technique can be improved by muscle strength. The ability, for example, to run just 2 steps further in a sprint before you get fatigued is HUGE.
As an example, boxers don't take PED's to punch harder, that's down to technique, they take PED's so they can maintain their technique for longer periods of time without becoming fatigued. The same thing would apply to most sports, HGH would never have made Messi more technical, but it may have given him other benefits that indirectly effected his overall game.