I think the answer lies more in males being effeminized by male hormonal birth control pills. Not to mention all the environmental contaminants, like plastics,

I think the answer lies more in males being effeminized by male hormonal birth control pills. Not to mention all the environmental contaminants, like plastics, which can have estrogen-like affects and are reducing sperm counts by themselves. A male hormonal birth control pill, has factors that goes beyond just birth control, and can negatively affect male masculinity. Both psychologically and physiologically. A lot of guys are going to give that a hard pass and rather have the choice of some other technology. It could be the FDA is more aware of the masculinity issues or perceived dangers, so are looking more deeply into side effects and long term effects.