What's not obvious that you can be low in a certain vitamin and then supplement that vitamin and blood levels will rise?? Op said you can't absorb nutrient's so why would blood levels rise??It's not obvious to me.
Low iron levels you feel bad , you supplement iron you feel better the supplement is doing something op says you can't absorb nutrient's..Correlation is not causation.
Not really op said you can't absorb nutrients.But if we don't know more than we know with regard to nutrients' absorption and their systemic effects, then we could very well be doing more harm than good by supplementing them.
That is to say, thinking we know more than we actually know about nutrients or steroids or anything else can lead to extremely bad outcomes. This is what I understood OP to mean by the term "useless".
Exactly so hormones do work .If the goal is to feel better for a short while, then fine. If the goal is to "become a beast" very quickly, then fine. But if the goal is to, say, reverse aging, then trt and steroids seem pretty useless.
And you can't exactly reverse aging anyway but you are missing the point again op said hormones are useless they do nothing.