Currently SC asks for the customers of hairderssers tagged with hairdresser=barber. It seems quite clear that they serve men so what's the point of adding male=yes?

https://www.openstreetmap.org/node/4497498913/history
https://www.openstreetmap.org/node/12253955845/history

hairdresser=barber has been approved in 2024-03, but it recently got a preset in iD and it is rapidly growing.

https://wiki.openstreetmap.org/wiki/Proposal:Barbers
https://wiki.openstreetmap.org/wiki/Tag:shop=hairdresser#Barbers
https://wiki.openstreetmap.org/wiki/Tag:hairdresser%3Dbarber

Versions affected

59.2, 60 and likely newer versions