mens names being taken by women

[Algernon]

i noticed recently that a lot of mens names have gone unisex, being used by both men and women (you can search it up, there is a wikipedia page for it), while womens names don't get given to men

i searched it up and most of the answers why seemed too simple

i think i know why but i want to see what other people here think

 

[PSLbbc]

Women are allowed to wear mens cloth without looking weird but men aren't