Very much true.
What's even more ridiculous than the people who talk about it like two diff substance is those who think the different brands of pharma GH have different side-effects.
There are studies where patients switched brands and zero difference. Why? Because it's the same thing--it's a synthetic product ffs, not home made strawberry jam. If the peptide chain is the correct order and sequence then it's GH, does what GH does.
Where do you get this idea? I remember using scihub to read HPLC study with diff brands of pharmaceutical grade, all tested over 98% purity. With pharma grade there's no "is this really what it says it is" + issues with consistency, which can and do occur with good generic providers.