The contact I mentioned was supposedly in Australian goverment if I recall correctly.
You can't say we don't have a clue about long term effects or its mechanism. In fact we know quite a lot more than many drugs or other treatments . Some have had adverse reactions it's true but without lasting effects from all the accounts I've heard of and this can occur with any oxidative therapy.
Come up with something concrete instead of just generalising without any backup
Your argument is there may be an adverse effect occurring for some reason in the distant future. I suppose you would attribute aging to Miracle-Mineral-Supplement in that case