Though many pros keep entertaining some wacky theories with little evidence so it's not so outrageous to think GH might have localised effects. I remember Milos has said gear has a localised effect. Some gurus say the same. Some shoot that IGF des in muscles trained right? Who knows, maybe insulin has some teeny tiny local effect, like if you do Fiasp that is active within seconds almost, those receptors in the muscle shot have "first dibs" on the flood of local insulin? This is just something that popped into my head just now lol, just saying people theorise. They try everything like you say. Say someone shoots GH IM in his delt and things really came together when you did that, for whatever reason, so now you have to do that "just in case" lol (cue gh15, GH goes in the delt, gear in the glutes lol).
Like LATS said some people even with medical degrees believe in these things.
Dave P never called out his buddy Valentino's claim that he got his outrageous arms from Test P and EQ lol.
Yeah I know lol. Just saying you can be sure someone tried it just in case it worked. It was that Leo Longevity fella that talked about the GH in the cock thing, him and many Redditor freaks did it. I think he did a pod about cock extension and his GF might have done one too, I didn't watch either one.