I'm not sure why you assume you are more knowledgeable than myself on the subject. You shouldn't assume that about anyone on this forum.
First of all, I spent several years of my life injecting pge-1 and tri-mix into my penis and severely overtrained myself into some of the biggest gains ever obtained by any member on this forum. I am currently retraining naturally to get my gains back.
Not once did I ever do a bad injection, and i was taught proper injection technique into the c.c. by a medical doctor.
Judging by your post, you have never injected anything into your c.c. you are merely regurgitating bro knowledge you read about online.
Second of all, not once in my post did I say that I was going to be injecting any substances into my penis. I was merely giving my two cents on which peptides or protocols would be more effective for tissue growth. Chances are, even if I tell him not to inject anything, he is just going to do it anyways. I would rather arm him with better knowledge than none at all.
I have long since moved on from chem pe, as I was one of the originals to take part in chemical penis enlargement protocols. I now do strictly natural pe.