I agree. But, as Skeptical said, fillers like
HA,
PMMA, Calcium based fillers, etc., have a good track record. As an example,
PMMA is being used as penis
Dermal Filler since 2007 (maybe even more in Brasil). That’s 14 years. Very few, rare, bad outcomes since then, speaking in terms of health. Aesthetically speaking, that’s another story. But, overall, good enough for most of men.