Everything I have read says that royal jelly increases testosterone and male fertility and helps to expel xenoestrogens. Royal jelly and bee propolis are almost in a similar boat and bee propolis is known to aid male potency. Not sure what you read but I did not come away with the same conclusions.
I watch this neuroscientist called Andrew Huberman. A lot of these holistic medicines have a potential, meaning if someone has ovaries than those gonads will be stimulated and if vice versa for men.